Perhaps you should try some spelling variations:
"heir apparent" » "huir apparent", "weir apparent", "herr apparent", "heir apparently", "heir aparente", "heir apaparente", "heir apparental"
"her apaparente" » "her aparente", "her apaaparentee", "her apaparentale"
"her apaparentale" » "her apparently", "her apaaparenteale", "her apaparentalale"
"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 ((("her apaparente") OR ("her apaparentale"))))) OR ("hair parent"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heir apparent\") OR (((\"her apaparente\") OR (\"her apaparentale\"))))) OR (\"hair parent\"))".
• Removing quotes may allow a broader search: (((( heir apparent ) OR ((( her apaparente ) OR ( her apaparentale ))))) OR ( hair parent )).
• Adding a wildcard symbol may retrieve word variants: (((("heir apparent") OR ((("her apaparente") OR ("her apaparentale"))))) OR ("hair parent"))*.