Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
cong thanh » dong thanh, cong trinh, cong tan
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 ((chieu xanh) 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 ((chieu xanh) OR (chieu sang)) - hanh ((mang cua) OR (dung cua)) dang cong thanh tra cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - hanh ((mang cua) OR (dung cua)) dang cong thanh tra cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - hanh ((mang cua) OR (dung cua)) dang cong thanh tra cao*.