Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » tinh cua, trinh luat, trinh quan
tong cong » cong cong, dung cong, dang cong
toan cau » toan ban, toan tap, toan tai
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: doi chieu sach - hanh trinh cua ((tong cong) or (trong cong)) tan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh trinh cua ((tong cong) OR (trong cong)) tan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh trinh cua ((tong cong) or (trong cong)) tan ((toan cau) or (toan cao))*.