Perhaps you should try some spelling variations:
juan meng » jui meng, yuan ming
juan rene » juan rana
lang yan » wang yan, wang yang, zhang yan
yan minh » tuan minh, sang minh, yang mind
song min » song ming, gong min, jong min
cong sun » cong shu, cong van, wing sun
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) OR (juan rene)) ((yan minh) or (song min)) cong sun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan yi ((juan meng) OR (juan rene)) ((yan minh) OR (song min)) cong sun ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan yi ((juan meng) OR (juan rene)) ((yan minh) or (song min)) cong sun ;*".