Perhaps you should try some spelling variations:
"cohen ethnic relations." » "cohen economic relations.", "co ethnic relations.", "other ethnic relations."
"gender ethnic question." » "gender ethnicity question.", "gender ethical question.", "gender topic question.", "inter ethnic question."
"given public relations." » "green public relations.", "von public relations.", "en public relations."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cohen ethnic relations.") or ("given public relations."))) or ("gender ethnic question."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cohen ethnic relations.") OR ("given public relations."))) OR ("gender ethnic question.")).
• Removing quotes may allow a broader search: (((( cohen ethnic relations. ) or ( given public relations. ))) or ( gender ethnic question. )).
• Adding a wildcard symbol may retrieve word variants: (((("cohen ethnic relations.") or ("given public relations."))) or ("gender ethnic question."))*.