Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung gian » truong giang, truong giao, trong giang
doan duong » doan cuong, doan huong, doan phuong
dan duong » dan dung, van duong, dai duong
ho chieu » theo chieu, hoc thieu, doi chieu
san cau » van cau, ban cau, ran cau
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh trung gian ((dan duong) or (doan duong)) tan ((san cau) OR (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung gian ((dan duong) OR (doan duong)) tan ((san cau) OR (can cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh trung gian ((dan duong) or (doan duong)) tan ((san cau) OR (can cau))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung gian ((dan duong) or (doan duong)) tan ((san cau) OR (can cau))*.