Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
cua song » cua cong, qua song, cua dong
cuu nong » cuu cong, cuu nang, cuu tong
cong tac » cong ty
tuan ban » tuan bang, toan ban, luan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tranh ((cua song) OR (cuu nong)) ((cong san) OR (cong tac)) tuan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh ((cua song) or (cuu nong)) ((cong san) or (cong tac)) tuan ban*.