Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua thong » cua thuong, cua khong, cua tong
anh hung » anh huong, manh hung, anh dung
hung cua » huong cua, chung cua, khung cua
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 (hieu manh)) - anh hung cua thong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu manh)) - anh hung cua thong cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (hieu manh)) - anh hung cua thong cong dan van ban*.