Perhaps you should try some spelling variations:
chiet tach » chieu sach
tranh cac » trinh cac, thanh cac, tranh cai
cac tuong » cac truong, cac phuong, cac chuong
ho chiet » ho chieu, ho thiet, hoc thiet
cong dan » cong tan, huong dan, cong tac
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - canh tranh cac tuong ((((cong dan) OR (cong dong))) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - canh tranh cac tuong ((((cong dan) OR (cong dong))) OR (cong san)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - canh tranh cac tuong ((((cong dan) OR (cong dong))) or (cong san)) toan cao*".