Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
nang hang » nang sang, hang hang, cang thang
cua nhung » va nhung
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chieu sang)) - nang hang cua nhung ((cong san) OR (cong tac)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chieu sang)) - nang hang cua nhung ((cong san) OR (cong tac)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu sang)) - nang hang cua nhung ((cong san) OR (cong tac)) than cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu sang)) - nang hang cua nhung ((cong san) OR (cong tac)) than cao*.