Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan tong » quan trong, quan dong, quan long
tong cong » trong cong, cong cong, dung cong
ho chiet » ho chieu, ho thiet, hoc thiet
cong san » cong tac
toan cau » toan cao, toan tai
toan ban » van ban

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