Perhaps you should try some spelling variations:
"nanda reformation biography sources" » "nanda information bibliography sources", "und reformation biography sources", "said reformation biography sources", "man's reformation biography sources", "nanda reformation bibliography resources"
"rand corporate demography sources" » "rand corporate memory sources", "rand corporate bibliography sources", "rad corporate demography sources", "wand corporate demography sources", "nanda corporate demography sources"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("rand corporate demography sources") OR ("nanda reformation biography sources")).
• Removing quotes may allow a broader search: (( rand corporate demography sources ) or ( nanda reformation biography sources )).
• Adding a wildcard symbol may retrieve word variants: (("rand corporate demography sources") or ("nanda reformation biography sources"))*.