Perhaps you should try some spelling variations:
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
dang haji » dang hai, dato haji
wei chen » wei shen, frei chen, jui chen
yang jie » yang jin, yang di, yang yi
yang jui » yang judy, yang di, yang yi
yang xi » yang di, yang yi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ran ((yang yang) or (wang yang)) wei chen ((((yang jie) OR (yang xi))) or (yang jui)) dang haji ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ran ((yang yang) OR (wang yang)) wei chen ((((yang jie) OR (yang xi))) OR (yang jui)) dang haji ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ran ((yang yang) or (wang yang)) wei chen ((((yang jie) OR (yang xi))) or (yang jui)) dang haji ;".
• Adding a wildcard symbol may retrieve word variants: ran ((yang yang) or (wang yang)) wei chen ((((yang jie) OR (yang xi))) or (yang jui)) dang haji ;*.