Perhaps you should try some spelling variations:
"heir apparent" » "huir apparent", "her apparent", "weir apparent", "heir apparently", "heir aparente"
"heir parently" » "huir parently", "her parently", "weir parently", "heir apparently", "heir parental", "heir parente"
"heir parent" » "huir parent", "her parent", "weir parent"
"wei apparental" » "wei apparentlyal", "wei aparenteal", "wei parental", "wei apparently", "wei aparentan"

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 parently") OR ("heir parent"))))) OR ("wei apparental"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"heir apparent\") OR (((\"heir parently\") OR (\"heir parent\"))))) OR (\"wei apparental\"))*".
• Removing quotes may allow a broader search: (((( heir apparent ) OR ((( heir parently ) OR ( heir parent ))))) OR ( wei apparental ))*.