Perhaps you should try some spelling variations:
"studies emotion" » "studies evolution", "studies fiction", "studies action"
"studies erosion" » "studies perfusion", "studies corrosion", "studies decision"
"study erosion" » "study emotion", "study revision", "study decision"

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