Perhaps you should try some spelling variations:
"the silliman foundation studies" » "the sloan foundation studies", "the schuman foundation studies", "the symbian foundation studies", "the silliman foundational studies", "the silliman oxidation studies", "the silliman foundation stones"
"the schemes foundations studies" » "the sciences foundations studies", "the theme foundations studies", "the games foundations studies", "the schemes foundational studies", "the schemes foundations study", "the schemes foundations 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: (("the silliman foundation studies") OR ("the schemes foundations studies")).
• Removing quotes may allow a broader search: (( the silliman foundation studies ) or ( the schemes foundations studies )).
• Adding a wildcard symbol may retrieve word variants: (("the silliman foundation studies") or ("the schemes foundations studies"))*.