Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
chan wang » chen wang, china wang, chan eng
chan kang » chung kang, chan eng, chan jan
chan fong » chew fong, chan eng, chan ming
dong bin » dong sin, dong di, dann bin
hong shu » cong shu, tong shui, wong shiu
tesis » testis, tests, teis

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (dong bin)) a la tesis ((chan wang) or (((chan kang) OR (chan fong)))) hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (dong bin)) a la tesis ((chan wang) OR (((chan kang) OR (chan fong)))) hong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (dong bin)) a la tesis ((chan wang) or (((chan kang) OR (chan fong)))) hong shu ;*".