Sheet2...

C2:

Control+shift+enter, not just enter:

=INDEX(Sheet1!$A$1:$A$10,MIN(IF(IF(Sheet1!$C$3:$C$ 12=B1,Sheet1!$B$2:$B$11)=A1,ROW(Sheet1!$A$1:$A$10) )))


Lemmesee wrote:
I have a Sheet of IMPORTED DATA(Sheet1). On another sheet, I need a formula
compare the data in Col's B AND C then return the related data from coumn A.
I hope the example below describes it.

Thanks in advance

Sheet1
A B C
1 PN1
2 20x12
3 CB100
4 PN2
5 20x12
6 CC100
7 PN3
8 15x18
9 CC100
10 PN4
11 20x30
12 CB100


Sheet2
A B C
1 20x30 CB100 PN4
2 20x12 CC100 PN2
3 20x12 CB100 PN1
4 15x18 CC100 PN3