Perhaps you should try some spelling variations:
chua khuong » chuc thuong, cua phuong, chu phuong
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
trinh tu » trinh ky, trinh do
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
tu chua » tua chua, tu cua, tu nhua

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 tu chua khuong tinh ((((toan cau) or (van ban))) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh trinh tu chua khuong tinh ((((toan cau) OR (van ban))) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh trinh tu chua khuong tinh ((((toan cau) or (van ban))) or (toan tap))*.