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

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