Perhaps you should try some spelling variations:
khuan kiem » khuan viem, phan kiem, hoan kiem
luong chan » luong nhan, luong phan, luong thanh
luong chat » luong cac, luong cua, luong ha
quang uan » quang tuan, quang ban, quang tran
uan khuan » xuan thuan, van thuan, van huan
kiem soat » kiem toan
dieu soat » hieu suat, dieu hoa, dieu hat

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 uan khuan kiem soat ) or ( tinh ((luong chan) OR (luong chat)) dang dieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang uan khuan kiem soat ) OR ( tinh ((luong chan) OR (luong chat)) dang dieu soat )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tinh quang uan khuan kiem soat ) or ( tinh ((luong chan) OR (luong chat)) dang dieu soat ))".
• Adding a wildcard symbol may retrieve word variants: (( tinh quang uan khuan kiem soat ) or ( tinh ((luong chan) OR (luong chat)) dang dieu soat ))*.