Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
canh dan » canh van, sanh dan, thanh dan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
hieu va » lieu va, hieu qua
anh van » anh va, thanh van, doanh van

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 va - ((canh dan) or (anh van)) cua thong cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu va - ((canh dan) OR (anh van)) cua thong cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hieu va - ((canh dan) or (anh van)) cua thong cong tac toan ban*.