Perhaps you should try some spelling variations:
thien hoat » trien hoat, thien thuat, tien hoa
quang quan » quang tuan, quang uan, quang xuan
kiem soat » kiem toan
tinh quan » trinh quan, tin quan, sinh quan
quan quan » quan quang, qua quan, quan luan
hieu soat » hieu suat, hieu hoat, hieu luat
quan van » luan van, quan va, quan luan
van hieu » cao hieu
quan vi » quan li, quan tri, quan doi

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