Perhaps you should try some spelling variations:
doanh tuong » doanh thuong, doanh tong, doanh trong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
tuan doanh » toan doanh, nhuan doanh, tuan anh
cach thoi » cac thoi, cach noi
cach thuc » anh thuc, cac thu
cong tuan » cong tan, cong luan, cong thanh
tuong hoc » truong hoc, tuong ho, duong hoc
hoi thi » hoi tai
thi van » thi lan, thi hanh, thi nang
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((cach thoi) or (cach thuc)) tai, nghien thu cong tuan doanh tuong hoc xa hoi thi van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((cach thoi) OR (cach thuc)) tai, nghien thu cong tuan doanh tuong hoc xa hoi thi van ban.
• Adding a wildcard symbol may retrieve word variants: su ((cach thoi) or (cach thuc)) tai, nghien thu cong tuan doanh tuong hoc xa hoi thi van ban*.