Perhaps you should try some spelling variations:
"heir apparent" » "her apparent", "weir apparent", "hair apparent", "heir apparently", "heir aparente", "heir apaparente", "heir apparental"
"heir aparenteal" » "her aparenteal", "weir aparenteal", "hair aparenteal", "heir aparente", "heir parental", "heir aparentan", "heir aaparenteeal", "heir aparentaleal"
"heir aaparenteely" » "her aaparenteely", "weir aaparenteely", "hair aaparenteely", "heir apparently", "heir aaaparenteeely", "heir aaparentaleely"
"huir parent" » "huir aparente", "huir parental"

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 aparenteal\"))) OR (\"heir aaparenteely\"))) OR (\"huir parent\"))~".
• Removing quotes may allow a broader search: (((((( heir apparent ) OR ( heir aparenteal ))) OR ( heir aaparenteely ))) OR ( huir parent ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("heir apparent") OR ("heir aparenteal"))) OR ("heir aaparenteely"))) OR ("huir parent"))*.