Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh hang » thanh hang, hang hang, hanh mang
dang cong » dung cong
hanh han » hanh nhan, hanh phan, hanh san
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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: theo ((hieu manh) OR (chieu sang)) - ((hanh hang) OR (hanh han)) cua dang cong tan toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sang)) - ((hanh hang) or (hanh han)) cua dang cong tan toan cau*.