Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
qua nhung » quan nhung, cua nhung, qua chung
dong qua » duong qua, dong cua, dong mua
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
ha dong » hoat dong, van dong

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