VLOOKUP array formula

I have the following information (small sample only):

Code Item List
162 AVS0001 AVS0001
162 AVS0002 AVS0003
162 AVS0003 BUD0002
162 AVS0005 C5O1208
102 BRE234 CAL0007
102 BRE-508 EQU0003
102 BRE-AB09 FXUK21916/2
162 BUD0002 GMC0003
162 C5ENV-TNT HSS0001
162 C5O1208 HSS0006
162 CAL0005 IBM0003
162 CAL0007 KUN0002



The list on the right is derived from the following array formula which has been copied down the column to end of the data range:

{=VLOOKUP($G$130, INDEX(G133:I252, SMALL(IF($G$130=INDEX(G133:I252, , 1), ROW(G133:I252)-MIN(ROW(G133:I252))+1, ""), ROW(1:1)), , 1), 2, FALSE)}

$G$130 refers to a value in that cell which is user defined from a drop down list and in this instance, the value is 162. Therefore, I would expect to see all of the items that contain 162, under the list column. As you can see, it has not returned all of the values relevant to 162. It has missed AVS002, AVS005 C5 ENV and CAL0005 in this example. The ommissions seem random. Any help would be appreciated!

It would be nice to see a sampling of actual data (replacing confidential data)... but at first glance... should the range G133:I252 be absolute? Ie. have $ signs to "freeze" the ranges, so you can copy down without changing them?