Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tran tuan » tran xuan, tran quang, tran thanh
dan thanh » dang thanh, danh thanh, ban thanh
thanh cac » hanh cac, thanh bac, thanh ca
thong tu » phong tuc, thong tin, thong ke
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 thiet tach - thanh ((((thong tu) or (dung luan))) or (tran tuan)) nhung cong dan thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - thanh ((((thong tu) OR (dung luan))) OR (tran tuan)) nhung cong dan thanh cac.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - thanh ((((thong tu) or (dung luan))) or (tran tuan)) nhung cong dan thanh cac*.