Perhaps you should try some spelling variations:
juan meng » juan rene, jui meng, yuan ming
sang minh » kang minah, anh minh, song ming
lang yan » wang yan, wang yang, zhang yan
song min » song ming, gong min, jong min
cong sun » cong shu, cong van, wing sun
yi juan » y juan
yan yi » yang yi, tan yi, yan zi

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan yi juan meng ((sang minh) or (song min)) cong sun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan yi juan meng ((sang minh) OR (song min)) cong sun ;*.