Revised Searches

I decided to revise my search on WorldCat first because it was the most frustrating for me, and turned up the worst results.
WorldCat
SS1: ((kw: collection and kw: development)) and ((kw: school and kw: library)) not ((kw: high or kw: college)).
This search yielded 820 records. Still too many, but these results are much better than the ones I got on my previous try. I decided to limit my search to items only available at TWU and got 49 records. All of the records were relevant.

Eric
This time I looked in the thesaurus for subject headings and found library collection development.
SS1:(((su= "library collection development")) and kw: school) not (kw: high or kw: college). This yielded 312 records, so I then limited to those only available at TWU library and got 163 records. Definitely different titles than in WorldCat, but again all good records.

BIP
SS1: ((kw: collection and kw: development)) and ((kw: school and kw: library)) not ((kw: high or kw: college)) and limited to books in English. I got 22 records. But wait, these records are no good. They have nothing to do with my topic. My original search was much better. I new understand the hatred many feel for BIP. Haha

Library Literature
SS1: ((kw: collection and kw: development)) and ((kw: school and kw: library)) not ((kw: high or kw: college)). This gave me 355 records, many of which were irrelevant.
SS2: ((kw: collection with kw: development)) and ((kw: school with kw: library)) not ((kw: high or kw: college)). This one gave me 52 records, but again, not relevant. I notice there are subject headings listed on the left side, so I chose to search Children's literature/Selection as the subject search. This gave me 112 records, but were much more relevant. Still not a fan of Library Lit.