Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, theo chu, thi chieu
bang suong » bang song, bang tuong, bang phuong
suong sang » luong sang, muong sang, tuong sang
trung mat » trung ma, trang mat, trung mot
ho chieu » hoc thieu, doi chieu, mot chieu
mat bang » cao bang
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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) or (theo chieu)) sach - thanh trung mat bang suong sang ((than cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - thanh trung mat bang suong sang ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) sach - thanh trung mat bang suong sang ((than cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sach - thanh trung mat bang suong sang ((than cau) OR (phan cau))*.