Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
thanh dang » thanh hang, thanh dan, thanh dong
cong quang » luong quang, thong quang, duong quang
thanh chau » thanh cha, thanh cham, thanh chu
hoc thieu » toc thieu, hoc hien
dang cong » dung cong
thanh cau » thanh mau, nhanh cau, thanh ca
ho chieu » theo chieu, doi chieu, mot chieu

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 (hoc thieu)) sach - thanh trung thanh dang cong quang ((thanh cau) OR (thanh chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh trung thanh dang cong quang ((thanh cau) OR (thanh chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - thanh trung thanh dang cong quang ((thanh cau) OR (thanh chau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh trung thanh dang cong quang ((thanh cau) OR (thanh chau))*.