Perhaps you should try some spelling variations:
khuong tinh » chuong trinh, phuong trinh, phuong binh
chua khuong » chuc thuong, cua phuong, chu phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trinh san » trinh han, trinh quan, trinh toan
trinh su » trinh tu, trinh cau, trinh cua
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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) OR (trinh san)) chua 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) OR (trinh san)) chua khuong tinh ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((trinh su) OR (trinh san)) chua khuong tinh ((toan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((trinh su) OR (trinh san)) chua khuong tinh ((toan cau) or (toan tap))*.