Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang cong » dung cong
thanh tra » thanh toan, thanh hoa
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
tra cao » tra bao, tra cau, tra cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (chieu sang)) - hanh ((mang cua) or (dung cua)) dang cong thanh tra cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sang)) - hanh ((mang cua) OR (dung cua)) dang cong thanh tra cao.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sang)) - hanh ((mang cua) or (dung cua)) dang cong thanh tra cao*.