Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
luan chung » luan chinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan tap » toan ban

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 sang) or (ho manh)) - hanh tang luan chung ((cong dan) or (cong tac)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (ho manh)) - hanh tang luan chung ((cong dan) OR (cong tac)) toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (ho manh)) - hanh tang luan chung ((cong dan) or (cong tac)) toan tap*.