Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, mot chieu
cua dung » cua dang, cua dong, qua dung
trong ca » trong cac, trong nha
toan cau » toan cao, toan ban, toan tap
ca toan » cua toan, va toan, bai toan

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) or (ho chieu)) sach - canh tranh cua dung trong ca toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (ho chieu)) sach - canh tranh cua dung trong ca toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (ho chieu)) sach - canh tranh cua dung trong ca toan cau*.