Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan dung » quang dung, quan duong, qua dung
trong dan » trong dang, trong tan, trong ban
trong san » trong cac, cong san, dong san
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 trinh quan dung ((trong dan) or (trong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh quan dung ((trong dan) OR (trong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh quan dung ((trong dan) or (trong san)) toan cau*.