Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trung » thanh trung, manh trung, danh trung
hanh trang » thanh trung, canh tranh, hanh trinh
tong dan » tuong dan, thong dan, trong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap
van han » van hanh, van phan, van nhan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) OR (chieu tinh)) - ((hanh trung) or (hanh trang)) van han tong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - ((hanh trung) OR (hanh trang)) van han tong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu tinh)) - ((hanh trung) or (hanh trang)) van han tong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu tinh)) - ((hanh trung) or (hanh trang)) van han tong dan than cao*.