Perhaps you should try some spelling variations:
"heir apparent" » "weir apparent", "hair apparent", "herr apparent", "heir aparente", "heir parent"
"heir apparently" » "weir apparently", "hair apparently", "herr apparently", "heir aparentely", "heir parently"
"huir apparently" » "huir aparentely", "huir parently"
"her apparently" » "her aparentely", "her parently"

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