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