Perhaps you should try some spelling variations:
"heir apparent" » "huir apparent", "her apparent", "hair apparent", "heir aparente", "heir parent"
"heir apparently" » "huir apparently", "her apparently", "hair apparently", "heir aparentely", "heir parently", "heir apparental", "heir apparent", "heir apparente"
"heir parently" » "huir parently", "her parently", "hair parently", "heir parental", "heir parent", "heir parente"
"weir apparently" » "weir aparentely", "weir parently", "weir apparental", "weir apparent", "weir apparente", "weis apparently", "wei apparently", "weil apparently"

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