Perhaps you should try some spelling variations:
"heir apparent" » "her apparent", "weir apparent", "hair apparent", "heir aparente", "heir apaparente", "heir apparental"
"heir aparentale" » "her aparentale", "weir aparentale", "hair aparentale", "heir aparente", "heir parental", "heir parentales", "heir aaparenteale", "heir aparentalale"
"heir parent" » "her parent", "weir parent", "hair parent", "heir aparente", "heir parental"
"huir apparently" » "huir aparentely", "huir apaparentely", "huir apparentally"

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 aparentale") OR ("huir apparently"))))) OR ("heir parent"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heir apparent\") OR (((\"heir aparentale\") OR (\"huir apparently\"))))) OR (\"heir parent\"))*".
• Removing quotes may allow a broader search: (((( heir apparent ) OR ((( heir aparentale ) OR ( huir apparently ))))) OR ( heir parent ))*.