Perhaps you should try some spelling variations:
ylang ylang » yang yang
chen chang » chen chung, chin chang, shen chang
wang yang » wang yan, wang liang, wang yanling
chang won » chang soon, chang ann, chang min
yi chen » jui chen
won yan » wang yan
yan yue » yang yue, gan yue, wang yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((wang yang) or (((lang lang) OR (ylang ylang)))) yi chen chang won yan yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((wang yang) OR (((lang lang) OR (ylang ylang)))) yi chen chang won yan yue ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((wang yang) or (((lang lang) OR (ylang ylang)))) yi chen chang won yan yue ;*".