Perhaps you should try some spelling variations:
"a romantic relationships" » "a woman relationships", "a plant relationships", "a human relationships", "_ romantic relationships", "_ romantics relationships"
"a forensic relationship" » "a romantic relationship", "a forever relationship", "a biometric relationship", "_ forensic relationship"
"japanese foreign relations" » "japan foreign relations", "japanese fiction relations", "chinese foreign relations"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("japanese foreign relations") or ((("a forensic relationship") OR ("a romantic relationships"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("japanese foreign relations") OR ((("a forensic relationship") OR ("a romantic relationships")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"japanese foreign relations\") or (((\"a forensic relationship\") OR (\"a romantic relationships\"))))".
• Removing quotes may allow a broader search: (( japanese foreign relations ) or ((( a forensic relationship ) OR ( a romantic relationships )))).
• Adding a wildcard symbol may retrieve word variants: (("japanese foreign relations") or ((("a forensic relationship") OR ("a romantic relationships"))))*.