Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
va dung » van dung, va duong, vat dung

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 - hanh trinh va dung cong dan ((doanh tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh trinh va dung cong dan ((doanh tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh trinh va dung cong dan ((doanh tai) or (toan tap))*.