Perhaps you should try some spelling variations:
rojas juan » roa juan
liang sun » liang dan, liang tan, wing sun
meng juan » feng juan, meng hsuan
meng yuan » meng hsuan, fang yuan, feng juan
song thin » song shin, song jin, song min
dong bin » dong sin, dong di, dann bin
li song » li cong, li rong, kim song

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((liang sun) or (dong bin)) rojas juan ((meng juan) OR (meng yuan)) li song thin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((liang sun) OR (dong bin)) rojas juan ((meng juan) OR (meng yuan)) li song thin ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((liang sun) or (dong bin)) rojas juan ((meng juan) OR (meng yuan)) li song thin ;*".