Perhaps you should try some spelling variations:
thien chinh » tien thinh, thien chien, thi chinh
thong cuong » thong chuong, thong cong, thong cung
hanh tranh » canh tranh, hanh trinh, lanh tranh
hanh trang » thanh trung, canh tranh, hanh trinh
che chinh » te chinh
cua thong » cua thuong, cua khong, cua tong
linh toan » tinh toan, hinh toan, minh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((che chinh) or (thien chinh)) sach - ((hanh tranh) OR (hanh trang)) cua thong cuong linh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((che chinh) OR (thien chinh)) sach - ((hanh tranh) OR (hanh trang)) cua thong cuong linh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((che chinh) or (thien chinh)) sach - ((hanh tranh) OR (hanh trang)) cua thong cuong linh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((che chinh) or (thien chinh)) sach - ((hanh tranh) OR (hanh trang)) cua thong cuong linh toan ban*.