Perhaps you should try some spelling variations:
"the silliman foundation studies" » "the sloan foundation studies", "the symbian foundation studies", "the willis foundation studies", "the silliman foundational studies", "the silliman foundation stones", "the silliman validation studies"
"the schuman foundation studies" » "the schuman foundational studies", "the schuman foundation stones", "the schuman validation studies", "the human foundations studies", "the schemes foundations studies", "the sloan foundation studies"
"the silliman oxidation studies" » "the silicon oxidation studies", "the villiger oxidation studies", "the milling oxidation studies", "the silliman validation studies", "the silliman oxidation states", "the silliman activation studies"

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 silliman oxidation studies"))) OR ("the schuman foundation studies"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"the silliman foundation studies\") OR (\"the silliman oxidation studies\"))) or (\"the schuman foundation studies\"))*".
• Removing quotes may allow a broader search: (((( the silliman foundation studies ) OR ( the silliman oxidation studies ))) or ( the schuman foundation studies ))*.