Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
minh luong » dinh luong, minh tuong, minh cuong
hieu soat » hieu suat, hieu hoat, hieu luat
van hieu » cao hieu
quan van » quan luan, quan doan, quang ban
quan va » quan vi, quan ha, luan va
luan » lan

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 van hieu soat ) or ( minh luong ((quan van) OR (quan va)) thien thanh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( trinh dung luan van hieu soat ) OR ( minh luong ((quan van) OR (quan va)) thien thanh ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( trinh dung luan van hieu soat ) or ( minh luong ((quan van) OR (quan va)) thien thanh ))*".