Perhaps you should try some spelling variations:
"philosophical history specific" » "philosophical historical specific", "philosophy history specific", "philosophical theory specific"
"philosophical study species" » "philosophical society species", "philosophical studies species", "philosophical woody species", "philosophical study aspects"
"philosophical study specific" » "philosophical society specific"

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: (("philosophical study species") OR ((("philosophical study specific") OR ("philosophical history specific")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"philosophical study species\") or (((\"philosophical study specific\") OR (\"philosophical history specific\"))))".
• Removing quotes may allow a broader search: (( philosophical study species ) or ((( philosophical study specific ) OR ( philosophical history specific )))).
• Adding a wildcard symbol may retrieve word variants: (("philosophical study species") or ((("philosophical study specific") OR ("philosophical history specific"))))*.