Perhaps you should try some spelling variations:
"venezuela, republics bulgariaa _" » "venezuela, republics bulgaria _", "venezuela, republic bulgaria _", "venezuela, republics bulgaria a", "venezuela, republics bulgaria 9", "venezuela, republics bulgaria 0"
"venezuela, republic bolivia de" » "venezuela, republic bohemia de", "venezuela, republic moravia de", "venezuela, republic political de", "venezuela, republic bolivia debt", "venezuela, republic bolivia _", "venezuela, republic bolivia a"
"venezuela, public bulgaria _" » "venezuela, republic bulgaria _", "venezuela, republics bulgaria _", "venezuela, policy bulgaria _"
"venezuela, republica bolivariana _" » "venezuela, republica bolivarian _", "venezuela, republica bolivariana de", "venezuela, republica boliviana _"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("venezuela, republic bolivia de") OR ((("venezuela, republica bolivariana _") OR ((("venezuela, republics bulgariaa _") OR ("venezuela, public bulgaria _")))))).
• Removing quotes may allow a broader search: (( venezuela, republic bolivia de ) or ((( venezuela, republica bolivariana _ ) or ((( venezuela, republics bulgariaa _ ) or ( venezuela, public bulgaria _ )))))).
• Adding a wildcard symbol may retrieve word variants: (("venezuela, republic bolivia de") or ((("venezuela, republica bolivariana _") or ((("venezuela, republics bulgariaa _") or ("venezuela, public bulgaria _"))))))*.