Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trinh quan » tinh quang, trinh luat, trinh han
khong cong » thong cong, khong cang, chong cong
trinh cua » tinh cua, trinh luat, trinh luan
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cau » tran chau, toan cau, ran 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: toc thieu xanh - hanh ((trinh cua) OR (trinh quan)) khong cong tac tran cau~.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh ((trinh cua) or (trinh quan)) khong cong tac tran cau*.