Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
wan wang » wen wang, wang yang, qian wang
yan wang » yuan wang, qian wang, yan liang
reform a » reform _
david ng » david g, david n, david a
yang li » yang lin, yang di, yang xi
form a » form _
hari » hard, hadi, haji

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan wang) or (((yan wang) OR (yang yang)))) yang li ((form a) or (reform a)) david ng hari ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan wang) OR (((yan wang) OR (yang yang)))) yang li ((form a) OR (reform a)) david ng hari ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wan wang) or (((yan wang) OR (yang yang)))) yang li ((form a) or (reform a)) david ng hari ;*".