Perhaps you should try some spelling variations:
thinh sach » chinh sach, tinh sach, sinh sach
hanh trinh » canh tranh, hanh chinh
thong cong » tong cong, thong thong, phong chong
trinh cua » tinh cua, trinh luat, trinh quan
manh toan » thanh toan, anh tuan, tinh toan
dan toan » van toan, dan than, xuan toan

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

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