Perhaps you should try some spelling variations:
thuyet tach » thuyet mach, thuyet hach, thuyet xac
hoc thuyet » hoc chuyen
hanh trinh » canh tranh, hanh chinh
phong cong » phong chong, thong cong, chong cong
trinh cua » tinh cua, trinh luat, trinh quan
cua phong » cua phuong, cua khong, cuu phong
cong dan » cong san, cong tan, huong dan
than man » than ma, tran manh, than phan

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

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