Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
dang cong » dung cong
ban cau » bang cau, ban can, van cau

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 trinh cua ((nhung cong) OR (dang cong)) van ban cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh cua ((nhung cong) or (dang cong)) van ban cau*.