I have this formula that uses one search function to do multiple searches.

The formula is
Formula: copy to clipboard 
=SMALL(IF(SUMPRODUCT(NOT(ISERR(SEARCH({"house","tent","zebra"},B1:B4)))*{1,2,4})=7=TRUE,ROW(B1:B4)),1)

but I'm getting an error message.


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The answer I want is 2 (row 2) since all the matches occur there.

What is wrong with the formula?