Perhaps you should try some spelling variations:
ylang ylang » yang yang, lang lang
chen cheng » chen chung, chen zheng, chen zhen
ping wang » ping pong, hong wang
cwong yue » wang yue, chong yun, wong yee
yang lin » yang jin, wang lin, yang li
lin chen » li chen, lin chun, lili chen
wong yue » wang yue, hong yu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ping wang) or (ylang ylang)) yang lin chen cheng boon ((cwong yue) or (wong yue)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ping wang) OR (ylang ylang)) yang lin chen cheng boon ((cwong yue) OR (wong yue)) ;.
• Adding a wildcard symbol may retrieve word variants: ((ping wang) or (ylang ylang)) yang lin chen cheng boon ((cwong yue) or (wong yue)) ;*.