Help with Array Formula (With Attachment)

Hello,

I have this array formula that looks is suppose to look in cell A12 and copy down all the potential results from B2:B8. The formula find the first results but gives me errors for the rest of the results. Would someone please take a look at this formula?

{=IF(ISERROR(INDEX($A$1:$B$8,SMALL(IF($A$1:$A$8=$A$12,ROW($A$1:$A$8)),ROW($1:$1)),2)),"",INDEX($A$1:$B$8,SMALL(IF($A$1:$A$8=$A$12,ROW($A1:$A$8)),ROW($1:$1)),2))}