Perhaps you should try some spelling variations:
rojas juan » roa juan
liang sun » liang dan, liang tan, wing sun
juan meng » juan rene, jui meng, yuan ming
meng juan » feng juan, meng yuan, meng hsuan
diego sog » die sog
dong bin » dong sin, dong di, dann bin
sog shin » song shin, sog rein

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 diego sog shin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((liang sun) OR (dong bin)) rojas juan meng juan diego sog shin ;*.