Perhaps you should try some spelling variations:
yuan kai » yuan kang, yuan fei, yuan hui
yang yao » yang yang, wang yan, yang yi
yong tan » hong tan, ybhg tan, wing tan
tan kai » tan kah
tan tan » tas tan, tin tan, tang tang
tan hai » dang hai
n chen » _ chen, z chen, don chen
a chen » ta chen, _ chen, z chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((((tan kai) or (yuan kai))) or (yang yao)) ((n chen) OR (a chen)) yong tan tan hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((((tan kai) OR (yuan kai))) OR (yang yao)) ((n chen) OR (a chen)) yong tan tan hai ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((((tan kai) or (yuan kai))) or (yang yao)) ((n chen) OR (a chen)) yong tan tan hai ;*".