Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
hanh trung » thanh trung, hanh trang, manh trung
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
theo yeu » theo tieu, thiet yeu, theo chu
chao chu » cho chu, cua chu, cao cho
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo yeu) or (chao chu)) sach - hanh trung cua khong cong ((dan toan) OR (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo yeu) OR (chao chu)) sach - hanh trung cua khong cong ((dan toan) OR (dan than)) cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo yeu) or (chao chu)) sach - hanh trung cua khong cong ((dan toan) OR (dan than)) cao*".