Perhaps you should try some spelling variations:
tinh dung » trinh dung, tin dung, tinh huong
hieu suat » hieu luat, hieu qua
kiem soat » kiem toan
luan bao » luat bao, luan ban, xuan bao
bao hieu » bao nhieu, cao hieu, bao hiem
tuan va » toan va, quan va, than va
luan va » luan van, luat va

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 luan bao hieu suat ) or ( tinh quang ((tuan va) or (luan va)) kiem soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung luan bao hieu suat ) OR ( tinh quang ((tuan va) OR (luan va)) kiem soat )).
• Adding a wildcard symbol may retrieve word variants: (( tinh dung luan bao hieu suat ) or ( tinh quang ((tuan va) or (luan va)) kiem soat ))*.