Perhaps you should try some spelling variations:
tinh dung » trinh dung, tin dung, tinh quang
kiem soat » kiem toan
tinh cong » trinh cong, tinh cuong, minh cong
cong luan » tong luan, cong tuan, dong luan
hieu soat » hieu suat, hieu hoat, hieu luat
quan hen » quan den, quan huyen, quang hien
van hieu » cao hieu

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 ((quan hen) or (quan he)) kiem soat ) or ( tinh cong luan van hieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung ((quan hen) OR (quan he)) kiem soat ) OR ( tinh cong luan van hieu soat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung ((quan hen) or (quan he)) kiem soat ) or ( tinh cong luan van hieu soat ))*.