Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
dang cong » dung cong
cong lang » cong vang, cong luong, cong quang
hoc hieu » hoc thieu, hoc hien, doc hieu
cua dang » cua cong, cua ban
toan cao » toan tap
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 hieu manh - ((hanh trinh) or (canh tranh)) cua dang cong lang ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh trinh) OR (canh tranh)) cua dang cong lang ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh trinh) or (canh tranh)) cua dang cong lang ((toan cao) or (toan ban))*.