Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hanh trinh » canh tranh, hanh chinh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban

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 nhung ((cong dan) or (cong tan)) ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - hanh trinh cua nhung ((cong dan) OR (cong tan)) ((toan tai) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - hanh trinh cua nhung ((cong dan) or (cong tan)) ((toan tai) or (toan tap))*.