Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
hang dong » hang nong, hang cong, hanh dong
bang cong » dang cong, bang song, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
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 trang cua ((hang dong) or (bang cong)) tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trang cua ((hang dong) OR (bang cong)) tinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trang cua ((hang dong) or (bang cong)) tinh toan cau*.