Perhaps you should try some spelling variations:
quang tuan » quang thanh, quan luan, quang cua
tinh dung » trinh dung, tin dung, tinh huong
dung nhan » dung luan
hieu soat » hieu suat, hieu hoat, hieu luat
nhan dan » phan dau, gian dan, nhan tai
dan hieu » danh hieu, van hieu, dao hieu
tuan van » luan van, tran van, tan van
ban soan » bien soan, ban doanh, nang soan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tinh dung nhan dan hieu soat ) or ( tinh quang tuan van ban soan ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tinh dung nhan dan hieu soat ) OR ( tinh quang tuan van ban soan ))*.