Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua thong » cua thuong, cua khong, cua tong
thong van » trong van, thong va, thong quan
hoc hieu » hoc thieu, hoc hien, doc hieu
van toan » van tuan, van tan, van thanh
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 - ((canh tranh) or (thanh trung)) cua thong thong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((canh tranh) OR (thanh trung)) cua thong thong van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((canh tranh) or (thanh trung)) cua thong thong van toan ban*.