Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh chat » tinh chat, trinh luat, trinh han
chat nhung » chat ngung, thuat nhung, cua nhung
nhung cong » dung cong, thong cong, hang cong
cong tac » cong ty
toan cao » toan tap
toan ban » van ban
hoc thi » hoc thai, hoc tai, hoc chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thi thanh - hanh trinh chat nhung cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thi thanh - hanh trinh chat nhung cong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thi thanh - hanh trinh chat nhung cong tac ((toan cao) or (toan ban))*.