string.find() can't printout all lines that matched with the string

Question

I am using the vector to store all the lines (parsing from a CSV file), which matched with the string that I am looking for (via string.find()!=string::npos).

But, the results didn't print out all the lines which contain the string.

CSV file:

fruit, 1000, abc, d890, 1234
fruit, 1432, abc, d890, 1234
fruit, 8923, abc, d890, 1234
fruit, 1454, abc, d890, 1234
fruit, 2574, abc, d890, 1234
fruit, 1000, abc, d890, 1234
fruit, 1000, abc, d890, 1234
water, 1000, abc, d890, 1234
water, 1000, abc, pat1, 1432
water, 1000, abc, pat2, 8923
water, 1000, abc, pat3, 1454
water, 1000, abc, pat4, 2574
water, 1000, abc, d890, 1234

The output which I want is as below:

fruit, 1432, abc, d890, 1234
fruit, 8923, abc, d890, 1234
fruit, 1454, abc, d890, 1234
fruit, 2574, abc, d890, 1234
water, 1000, abc, pat1, 1432
water, 1000, abc, pat2, 8923
water, 1000, abc, pat3, 1454
water, 1000, abc, pat4, 2574

But, actual output is

water, 1000, abc, pat1, 1432
water, 1000, abc, pat2, 8923
water, 1000, abc, pat3, 1454
water, 1000, abc, pat4, 2574

Codes as below:

    #include <iostream>
    #include <fstream>
    #include <sstream>
    #include <string>
    #include <vector>
    #include <windows.h>

    using namespace std;

    void splitter(vector<string> HK, vector<string>& CH)
{
    for(unsigned int i = 0; i < HK.size(); i++)
    {
        char sep = ',';
        string s = HK[i];
        for(size_t p = 0, q = 0; p != s.npos; p = q)
        {
            CH.push_back(s.substr(p + (p != 0), (q = s.find(sep, p + 1)) - p - (p != 0)));
        }
    }
}

    int main()
    {
        ifstream iFile("C:\\abc.csv");
        string line;

        //Opening may fail, perform checking
        if(!iFile)
        {
            cout << "Error, could not open file." << endl;
            return -1;
        }

        string lookForStr[] = {"pat1", "pat2", "pat3", "pat4"};

        //create vector to store BLT of parent and child
        vector<string> lookForStrVec;
        vector<string> lookForStrVecNext;
        vector<string> lookForStrVecNext1;
        vector<string> lookForStrVecNext11;     

        while(!iFile.eof())
        {
            getline(iFile, line);

            for(unsigned int i = 0; i < 4; ++i)                
                {
                    if(line.find(lookForStr[i]) != string::npos)
                    {
                        lookForStrVec.push_back(line);
                    }
                }

                splitter(lookForStrVec, lookForStrVecNext);

                for(unsigned int i = 0; i < lookForStrVecNext.size(); i += 5)
                {
                    if(line.find(lookForStrVecNext[i + 4]) != string::npos)
                    {
                        string str = lookForStrVecNext[i + 4];
                        lookForStrVecNext1.push_back(str);
                    }
                }

                for(unsigned int i = 0; i < lookForStrVecNext1.size(); ++i)
                {
                    if(line.find(lookForStrVecNext1[i]) != string::npos)
                    {
                        lookForChildStrNext11.push_back(line);
                    }
                }
            }
        }

        cout << endl << "print all lines with matched string..." << endl;
        for(unsigned int i = 0; i < lookForStrVecNext11.size(); ++i)
        {
            cout << lookForChildVecNext11[i] << endl;
        }       

        system("pause");
    }

Answer 1

Here is a simpler approach, printing the lines containing one of:
"1432", "8923", "1454", "2574"

#include <iostream>
#include <fstream>
#include <string>
#include <algorithm>
#include <vector>

int main()
{
    std::ifstream file("file.txt");
    if (!file.is_open()) {
        std::cout << "Couldn't open file\n";
        return -1;
    }

    std::vector<std::string> find { "1432", "8923", "1454", "2574" };

    std::string line;
    while (std::getline(file, line)) {
        bool found = false;
        std::for_each(begin(find), end(find), [&](std::string s) {
            std::string::size_type n = 0;
            n = line.find(s);
            if (n != std::string::npos) {
                found = true;
                return;
            }
        });

        if (found)
            std::cout << line << '\n';
    }
}

Which prints the expected result:

fruit, 1432, abc, d890, 1234
fruit, 8923, abc, d890, 1234
fruit, 1454, abc, d890, 1234
fruit, 2574, abc, d890, 1234
water, 1000, abc, pat1, 1432
water, 1000, abc, pat2, 8923
water, 1000, abc, pat3, 1454
water, 1000, abc, pat4, 2574