Perhaps you should try some spelling variations:
done using » line using, move using
hua rents » hua ren
rents yan » ren yan
using ya » using a, using _, using 4d
long shu » cong shu, tong shui, long du
wong sau » wong sam, wong siu, wong shiu
yan jiu » yang jie, yang jin, pang jiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: done using ya hua rents yan jiu ((long shu) OR (wong sau)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "done using ya hua rents yan jiu ((long shu) OR (wong sau)) ;".
• Adding a wildcard symbol may retrieve word variants: done using ya hua rents yan jiu ((long shu) OR (wong sau)) ;*.