Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong quan » thong quan, duong qua
trinh cong » trinh dung
hieu soat » hieu hoat, hieu luat, kiem soat
cong quan » cuong quan, cong quang, tong quan
luan hieu » luan tieu, luan dieu, luan thiet
hieu suat » hieu luat, hieu qua
quan dat » quan sat, qua dat, quan dac
dat hieu » dao hieu, dat tieu, rat nhieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh luong quan dat hieu soat ) or ( trinh cong quan luan hieu suat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh luong quan dat hieu soat ) OR ( trinh cong quan luan hieu suat ))*.