Perhaps you should try some spelling variations:
chuong trinh » cong trinh
khuong tinh » phuong trinh, phuong binh, khun tinh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, manh hung
trung sua » truong sua, trung cua, trung tuan
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 - manh trung sua chua ((khuong tinh) OR (chuong trinh)) ((doanh tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - manh trung sua chua ((khuong tinh) OR (chuong trinh)) ((doanh tai) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - manh trung sua chua ((khuong tinh) OR (chuong trinh)) ((doanh tai) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - manh trung sua chua ((khuong tinh) OR (chuong trinh)) ((doanh tai) or (toan tap))*.