Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
trong dang » truong dang, trong dong, trong dung
trong dan » trong san, trong tan, trong ban
ho chieu » theo chieu, hoc thieu, doi chieu
trinh ca » trinh cau, trinh cua, trinh cac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 ca ((trong dang) or (trong dan)) van ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh ca ((trong dang) OR (trong dan)) van ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh ca ((trong dang) or (trong dan)) van ((toan cau) or (toan ban))*.