Perhaps you should try some spelling variations:
minh thong » minh thuong, minh tuong, minh thang
hieu soat » hieu suat, hieu hoat, hieu luat
thong tac » thong cac, tuong tac, thong tai
quan dien » quan den, quan doan, toan dien
binh dan » minh danh, binh dinh, binh luan
dan dung » van dung, tin dung, ap dung
dung doc » dung hoc, dung doi, dung coc
doc hieu » toc thieu, hoc thieu, hoc hien
hoa » khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( binh dan dung doc hieu soat ) or ( minh thong tac quan dien hoa ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( binh dan dung doc hieu soat ) OR ( minh thong tac quan dien hoa )).
• Adding a wildcard symbol may retrieve word variants: (( binh dan dung doc hieu soat ) or ( minh thong tac quan dien hoa ))*.