Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
van nhung » van nhuong, va nhung, van phung
manh hung » anh huong
ho chieu » theo chieu, hoc thieu, doi chieu
van hung » van dung, van duong, van dong
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 - thanh trung ((van nhung) or (((van hung) OR (manh hung)))) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung ((van nhung) OR (((van hung) OR (manh hung)))) cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung ((van nhung) or (((van hung) OR (manh hung)))) cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung ((van nhung) or (((van hung) OR (manh hung)))) cong tac toan cau*.