Perhaps you should try some spelling variations:
minh quang » tinh quang, dinh quang, minh hoang
quang tuan » quang thanh, quan luan, quang cua
dung quang » dang quang, dung quan, luong quang
hieu suat » hieu luat, hieu qua
kiem soat » kiem toan
quang va » quang van, quan va, quang ma
tuan vi » quan vi, luan vi, quans vi
vi hieu » vi dieu, va hieu, vo hieu
bien so » bien doi

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

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