Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
qua dung » quang dung, su dung, qua song
cua dang » cua ban
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: theo chieu sach - thanh trung ((qua dung) or (((cua dang) OR (cua cong)))) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung ((qua dung) OR (((cua dang) OR (cua cong)))) cong tac toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh trung ((qua dung) or (((cua dang) OR (cua cong)))) cong tac toan cau*".