Perhaps you should try some spelling variations:
kiem soat » kiem toan
minh cong » minh cuong, sinh cong, minh hoang
cong tuan » cong tan, cong luan, cong thanh
hieu soat » hieu suat, hieu hoat, hieu so
hieu luat » hieu qua
tuan van » luan van, tran van, tan van
luan va » luan van, luat va
va kiem » van kien

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( trinh dung luan va kiem soat ) or ( minh cong tuan van ((hieu soat) or (hieu luat)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh dung luan va kiem soat ) OR ( minh cong tuan van ((hieu soat) OR (hieu luat)) )).
• Adding a wildcard symbol may retrieve word variants: (( trinh dung luan va kiem soat ) or ( minh cong tuan van ((hieu soat) or (hieu luat)) ))*.