Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hanh trinh » canh tranh, hanh chinh
trinh hanh » trinh thanh, trinh han, trinh anh
hanh nhung » anh nhung, canh nhung, doanh nhung
hoc thiet » hoc thieu, hoc thuyet, hoc hien
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan ban » van 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 hanh nhung ((cong tan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - hanh trinh hanh nhung ((cong tan) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - hanh trinh hanh nhung ((cong tan) or (cong san)) toan ban*.