Perhaps you should try some spelling variations:
tinh luong » tinh huong, dinh luong, minh luong
luong chat » luong cac, luong cua, luong ha
ban khuan » ban quan, ban nhan, van thuan
kiem soat » kiem toan
chat doan » chan doan, chuan doan, chat ban
doan dieu » nhan dieu, dang dieu, toan dien
dieu soat » hieu suat, dieu hoa, dieu hat
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quang ((ban khuan) or (ban than)) kiem soat ) or ( tinh luong chat doan dieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang ((ban khuan) OR (ban than)) kiem soat ) OR ( tinh luong chat doan dieu soat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh quang ((ban khuan) or (ban than)) kiem soat ) or ( tinh luong chat doan dieu soat ))*.