Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh tang » hanh trang, anh tang, hanh mang
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
tang cua » mang cua, hang cua, tang luan
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap

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 cua ((hang cong) OR (dang cong)) tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sang)) - hanh tang cua ((hang cong) OR (dang cong)) tan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chieu sang)) - hanh tang cua ((hang cong) OR (dang cong)) tan than cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chieu sang)) - hanh tang cua ((hang cong) OR (dang cong)) tan than cao*.