Perhaps you should try some spelling variations:
song ming » song bing, song min, gong min
juan meng » juan rene, jui meng, yuan ming
lang yan » wang yan, wang yang, zhang yan
yan minh » tuan minh, sang minh, yang mind
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 ((yan minh) or (song ming)) cong sun ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan yi juan meng ((yan minh) OR (song ming)) cong sun ;*.