Perhaps you should try some spelling variations:
luong quan » thong quan, duong qua
dinh luong » dinh duong, dinh huong, dinh cuong
hien soat » thien hoat, kiem soat, bien soan
hieu soat » hieu suat, hieu hoat, hieu luat
dung lam » dung luan, dung tai, dung dat
van hien » van tien
quan van » luan van, quan va, quan luan
van hieu » cao hieu
lam van » lam san, nam van, dam van
tin » tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tin dung lam van hien soat ) or ( dinh luong quan van hieu soat ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung lam van hien soat ) OR ( dinh luong quan van hieu soat )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung lam van hien soat ) or ( dinh luong quan van hieu soat ))*.