Perhaps you should try some spelling variations:
dong hoang » hong hong
juan rene » juan meng, juan rana
rene yan » ren yan, rene ten, see yan
hong ghi » zhong zhi, hong g
hong hai » shang hai, zhong tai, dang hai
vu juan » v juan, vu tuan, rud juan
yan tin » yuan ting, yang jin, yang lin

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong hoang vu juan rene yan tin ((hong ghi) or (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong hoang vu juan rene yan tin ((hong ghi) OR (hong hai)) ;.
• Adding a wildcard symbol may retrieve word variants: dong hoang vu juan rene yan tin ((hong ghi) or (hong hai)) ;*.