You can use the Exact function =exact(text1,text2) in column C and drag the
formula down the column. If it's similar, it returns TRUE, if not it says
FALSE. You can then select the column, copy and "paste special" as values to
do a Find for true. Or you can use the IF function in column D to copy the
true values: =IF(C1=FALSE," ",B1). You can then copy and paste special as
values the entire column D and then delete column C.