Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
doi chiet » doi chieu, doi chi, doi viet
mang cua » dung cua, ban cua, cong cua
manh cua » doanh cua, ban cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - cach ((mang cua) or (manh cua)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - cach ((mang cua) OR (manh cua)) nhung cong tac toan cau*.