Perhaps you should try some spelling variations:
chieu tach » chiet tach, chieu sach, chiu trach
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
trang cua » tranh cua, tang cua, trung cua
tran van » luan van
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 chieu tach - hanh ((trang cua) or (tran van)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tach - hanh ((trang cua) OR (tran van)) nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu tach - hanh ((trang cua) or (tran van)) nhung cong tac toan cau*.