Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
de longue » der longue, de langue, de langues
yan guan » gan guan, yan yuan, yang guang
tan chia » tuan china, than china, can china
hui yang » hui ying, du yang, h yang
lei kyun » lee kyung, lee kyu, pei yun
de long » le long

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 (yan guan)) tan chia ((hui yang) or (lei kyun)) ((de long) OR (de longue)) du ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yan guan)) tan chia ((hui yang) OR (lei kyun)) ((de long) OR (de longue)) du ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (yan guan)) tan chia ((hui yang) or (lei kyun)) ((de long) OR (de longue)) du ;*".