Perhaps you should try some spelling variations:
"heir apparent" » "huir apparent", "weir apparent", "herr apparent", "heir aparente", "heir apaparente", "heir apparental"
"heir apparently" » "huir apparently", "weir apparently", "herr apparently", "heir aparentely", "heir apaparentely", "heir apparentally"
"her apaparente" » "her aparente", "her apaaparentee", "her apaparentale"
"hair parent" » "hair aparente", "hair parental"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("heir apparent") OR ("heir apparently"))) OR ("her apaparente"))) OR ("hair parent"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"heir apparent\") OR (\"heir apparently\"))) OR (\"her apaparente\"))) OR (\"hair parent\"))".
• Removing quotes may allow a broader search: (((((( heir apparent ) OR ( heir apparently ))) OR ( her apaparente ))) OR ( hair parent )).
• Adding a wildcard symbol may retrieve word variants: (((((("heir apparent") OR ("heir apparently"))) OR ("her apaparente"))) OR ("hair parent"))*.