Perhaps you should try some spelling variations:
"heir apparent" » "huir apparent", "her apparent", "hair apparent", "heir apparently", "heir aparente", "heir apaparente", "heir apparental"
"heir aparenteal" » "huir aparenteal", "her aparenteal", "hair aparenteal", "heir aparente", "heir parental", "heir aparentan", "heir aaparenteeal", "heir aparentaleal"
"heir aparentely" » "huir aparentely", "her aparentely", "hair aparentely", "heir aparente", "heir apparently", "heir aparentes", "heir aaparenteely", "heir aparentalely"
"weir parent" » "weis parent", "wei parent", "weil parent", "weir aparente", "weir 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 aparentely\"))) OR (\"weir parent\"))~".
• Removing quotes may allow a broader search: (((((( heir apparent ) OR ( heir aparenteal ))) OR ( heir aparentely ))) OR ( weir parent ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("heir apparent") OR ("heir aparenteal"))) OR ("heir aparentely"))) OR ("weir parent"))*.