Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
thong cong » trong cong, tong cong, thong thong
hanh tang » hanh trang, hanh mang, hanh tung
cua thong » cua thuong, cua khong, cua tong
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang 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 tang) or (anh tang)) cua thong cong tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - ((hanh tang) OR (anh tang)) cua thong cong tan tran cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sang)) - ((hanh tang) or (anh tang)) cua thong cong tan tran cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sang)) - ((hanh tang) or (anh tang)) cua thong cong tan tran cao*.