Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hanh trinh » canh tranh, hanh chinh
phong cong » phong chong, thong cong, chong cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
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 thiet tach - hanh trinh cua phong cong dan ((than man) OR (thanh san))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tach - hanh trinh cua phong cong dan ((than man) OR (thanh san))".
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - hanh trinh cua phong cong dan ((than man) OR (thanh san))*.