Find column name based on search criteria

Question

I have the following Excel spreadsheet:

        A        B         C              D              E          F       
1     MFC2      MFC1      QFC      Searc         


        

Answer 1

=INDEX($A$1:$C$1,MAX(ISNUMBER(FIND(E1,$A$2:$C$7))*COLUMN($A$2:$C$7)))

Answer 2

Use AGGREGATE instead of MATCH:

=INDEX(1:1,AGGREGATE(15,7,COLUMN($A$2:$C$30)/($A$2:$C$30=$E$1),1))