Perhaps you should try some spelling variations:
khuong tinh » chuong trinh, phuong trinh, phuong binh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
cua khuong » cua phuong, cua huong, cua khong
trinh su » trinh tu, trinh san, trinh cau
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
su cua » hu cua, tu cua, vu cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh trinh su cua khuong tinh ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh trinh su cua khuong tinh ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh trinh su cua khuong tinh ((toan cau) or (toan tap))*.