Perhaps you should try some spelling variations:
minh thong » minh thuong, minh tuong, minh thang
hieu suat » hieu luat, hieu qua
hieu hoat » hieu hoa, thien hoat, hieu luat
dung dat » dung va, dung tai
quan doi » quan tri, quan li
doi bien » doi dien, voi bien, doi hien
dat van » dao van, dat va, dam van
bien so » bien doi
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 dat van ((hieu hoat) or (hieu suat)) ) or ( minh thong quan doi bien so ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tin dung dat van ((hieu hoat) OR (hieu suat)) ) OR ( minh thong quan doi bien so )).
• Adding a wildcard symbol may retrieve word variants: (( tin dung dat van ((hieu hoat) or (hieu suat)) ) or ( minh thong quan doi bien so ))*.