Perhaps you should try some spelling variations:
yulu cheng » yu cheng, yuan cheng
yang yang » wang yang, wang yan
yulu chen » yu chen
yang yao » wang yan, yang yi, yang fan
chan eng » chan fong, chan kang, chan ming
eng song » eng hong, eng seng, zheng song
shin » skin, sein, thin

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 yao ((yulu chen) or (yulu cheng)) chan eng song shin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang yao ((yulu chen) OR (yulu cheng)) chan eng song shin ;.
• Adding a wildcard symbol may retrieve word variants: yang yang yao ((yulu chen) or (yulu cheng)) chan eng song shin ;*.