Perhaps you should try some spelling variations:
cdoanh van » doan van, doanh va, doanh ban
thong cong » trong cong, tong cong, thong thong
hieu cach » hieu cac, chieu sach, hieu ca
doanh van » doan van, doanh va, doanh ban
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
can van » cac van, can ban, tan 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 cach - ((((cdoanh van) or (can van))) or (doanh van)) cua thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cach - ((((cdoanh van) OR (can van))) OR (doanh van)) cua thong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - ((((cdoanh van) or (can van))) or (doanh van)) cua thong cong tac toan cau*.