Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong quan » thong quan, duong qua
dung lang » dung dang, dung nang, dung land
hieu suat » hieu qua
hieu luat » hieu qua
quan toan » quang toan, quan doan, xuan toan
tien soan » bien soan, tien hoang, thien toan
lang van » dang van, tang van, hoang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung lang van ((hieu suat) or (hieu luat)) ) or ( tinh luong quan toan tien soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung lang van ((hieu suat) OR (hieu luat)) ) OR ( tinh luong quan toan tien soan )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung lang van ((hieu suat) or (hieu luat)) ) or ( tinh luong quan toan tien soan ))*.