Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thien hach » thien thanh, hien hanh
manh hung » anh huong
hang cong » dang cong, hang nong, bang cong
hung cua » huong cua, chung cua, khung cua
cua hang » cua dang, cua nhung, cua cong
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: hoc ((chieu sach) or (thien hach)) - manh hung cua hang cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (thien hach)) - manh hung cua hang cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (thien hach)) - manh hung cua hang cong dan van ban*.