Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
ho chieu » theo chieu, hoc thieu, doi chieu
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: ho chieu sach - hanh ((tran van) or (hang va)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tran van) OR (hang va)) nhung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tran van) or (hang va)) nhung cong tac toan cau*.