Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
toan tai » toan tap, doanh tai, toan ban
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 - hanh trinh vat dung cong dan ((toan tai) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - hanh trinh vat dung cong dan ((toan tai) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - hanh trinh vat dung cong dan ((toan tai) or (toan cao))*.