Perhaps you should try some spelling variations:
chieu luat » hieu suat, hien luat, chiet xuat
tinh dung » trinh dung, tin dung, tinh quang
dung nhan » dung luan
hieu luat » hieu qua
trinh han » trinh quan
bien soan » bien so
nhan thi » nhanh thi, nhan tai, phan thi
han quan » phan quan, hang quan, van quan
quan voi » quan doi, quan vi, quen voi
voi bien » vat bien, va bien, ve bien

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh dung nhan thi ((chieu luat) OR (hieu luat)) ) or ( trinh han quan voi bien soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung nhan thi ((chieu luat) OR (hieu luat)) ) OR ( trinh han quan voi bien soan ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh dung nhan thi ((chieu luat) OR (hieu luat)) ) or ( trinh han quan voi bien soan ))*".