Use the Column() function. If your formula doesn't appear in the first column, simply add or subtract from the Column() to get the desired number.
So, assuming your formula starts in cell C1
=IF(VLOOKUP(C7,Overzicht!A8:L33,COLUMN()-2,FALSE)=0,"",VLOOKUP(C7,Overzicht!A8:L33,COLUMN()-2,FALSE))
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