Perhaps you should try some spelling variations:
chieu sang » chieu xanh, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hieu lang » hieu quang, nhieu tang, hieu van
cua trong » cua truong, cua trung, qua trong
cong cua » cong cu, dong cua, huong cua
cong dan » cong san, cong tan, huong dan
dan hanh » dang hanh, dan khanh, dan thanh
hanh cac » hang cac, hanh cat, nhanh cay

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 sang) or (hieu lang))) or (chieu sach)) - thanh cong cua trong cong dan hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sang) OR (hieu lang))) OR (chieu sach)) - thanh cong cua trong cong dan hanh cac.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sang) or (hieu lang))) or (chieu sach)) - thanh cong cua trong cong dan hanh cac*.