Perhaps you should try some spelling variations:
quang luan » quan luan, quang tuan, quang uan
minh luong » dinh luong, minh tuong, minh cuong
luong quan » thong quan, duong qua
hieu soat » hieu suat, hieu hoat, hieu luat
lien soat » kiem soat, bien soan, lien son
van hieu » cao hieu
quan doi » quan tri, quan li
bien so » bien doi
tinh » trinh, dinh, kinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh quang luan van hieu soat ) or ( minh luong quan doi ((lien soat) or (bien so)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh quang luan van hieu soat ) OR ( minh luong quan doi ((lien soat) OR (bien so)) )).
• Adding a wildcard symbol may retrieve word variants: (( tinh quang luan van hieu soat ) or ( minh luong quan doi ((lien soat) or (bien so)) ))*.