Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hanh tram » hanh trang, thanh tran, thanh tra
hanh tam » thanh tam, nhanh tam, hanh lam
van dung » van dong, xay dung, tin dung
cong dan » cong san, cong tan, cong dong
toan cao » toan ban, toan tap

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 - ((hanh tram) OR (hanh tam)) van dung ((cong dan) or (huong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - ((hanh tram) OR (hanh tam)) van dung ((cong dan) OR (huong dan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - ((hanh tram) OR (hanh tam)) van dung ((cong dan) or (huong dan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - ((hanh tram) OR (hanh tam)) van dung ((cong dan) or (huong dan)) toan cao*.