Perhaps you should try some spelling variations:
nhiet tach » chiet tach
hanh trinh » canh tranh, hanh chinh
dong thanh » truong thanh
hoc nhiet » hoc thiet, hoc nghien, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhiet tach - hanh trinh cua thong ((cong dan) or (dong thanh)) ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhiet tach - hanh trinh cua thong ((cong dan) OR (dong thanh)) ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - hanh trinh cua thong ((cong dan) or (dong thanh)) ((toan ban) or (van ban))*.