Perhaps you should try some spelling variations:
thinh sach » chinh sach, tinh sach, sinh sach
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
toan ban » van ban
tien » tieng, bien, vien

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

• Performing a fuzzy search may retrieve terms with similar spellings: tien thinh sach - hanh trinh cua ((hang cong) OR (dang cong)) dan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tien thinh sach - hanh trinh cua ((hang cong) OR (dang cong)) dan ((toan ban) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tien thinh sach - hanh trinh cua ((hang cong) OR (dang cong)) dan ((toan ban) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: tien thinh sach - hanh trinh cua ((hang cong) OR (dang cong)) dan ((toan ban) or (toan tap))*.