Yes there are ways to Filter and Search on each column of a List view
Open then PO Entry screen. Open the subject PO. Navigate to Lines Tab. Click on the List Tab. Right Click and select the Show Grid Filters option. Click on the Filter Icon that now appears in the Bar. Select Custom Option. You will see this Pop Up. Enter a Criteria from the Drop down and Enter the appropriate value.
Using Custom Filters on List ViewThanks
Bill