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
truong cua » truong ca, truong quan, truong cao
chu khuong » chu khong, chu phuong, chuc thuong
trung cua » trung tuan, trung cap, dung cua
toan tai » doanh tai, toan ban, toan cao
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 ((trung cua) OR (truong cua)) chu khuong tinh ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((trung cua) OR (truong cua)) chu khuong tinh ((toan tai) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((trung cua) OR (truong cua)) chu khuong tinh ((toan tai) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((trung cua) OR (truong cua)) chu khuong tinh ((toan tai) or (toan tap))*.