Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, hang cong, dung cong
bang song » nang song
ho chieu » theo chieu, doi chieu, mot chieu
trung va » truong va, trang va, trung ha
van toan » van tuan, van tan, van thanh
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: ((ho chieu) or (hoc thieu)) sach - thanh trung va ((bang cong) OR (bang song)) van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - thanh trung va ((bang cong) OR (bang song)) van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sach - thanh trung va ((bang cong) OR (bang song)) van toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - thanh trung va ((bang cong) OR (bang song)) van toan ban*.