Perhaps you should try some spelling variations:
"heir apparent" » "her apparent", "heir apparently", "heir aparente", "heir apparente", "heir apparents", "heir apaparente"
"heir parentales" » "her parentales", "heir parental", "heir parenteales", "heir parentsales", "heir aparenteales"
"heir aaparenteely" » "her aaparenteely", "heir apparently", "heir aaparenteeely", "heir aaparentseely", "heir aaaparenteeely"
"heir parent" » "her parent", "heir parente", "heir parents", "heir aparente"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heir apparent\") OR (((\"heir parentales\") OR (\"heir aaparenteely\"))))) OR (\"heir parent\"))~".
• Removing quotes may allow a broader search: (((( heir apparent ) OR ((( heir parentales ) OR ( heir aaparenteely ))))) OR ( heir parent ))~.
• Adding a wildcard symbol may retrieve word variants: (((("heir apparent") OR ((("heir parentales") OR ("heir aaparenteely"))))) OR ("heir parent"))*.