Perhaps you should try some spelling variations:
thanh trung » thanh tung
cua truong » cua trung, xuan truong, cac truong
hoc chieu » hoc thieu, hoc hien, hoc dieu
trung cua » truong cua, trung tuan, trung cap
cong vang » cong lang, cong quang, cong ngang
thanh ban » thanh san, thanh van, thanh bac
ho chieu » theo chieu, hoc thieu, doi chieu
cong van » cong san, song van, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (ho chieu)) sach - thanh trung cua truong ((cong van) OR (cong vang)) thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (ho chieu)) sach - thanh trung cua truong ((cong van) OR (cong vang)) thanh ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (ho chieu)) sach - thanh trung cua truong ((cong van) OR (cong vang)) thanh ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (ho chieu)) sach - thanh trung cua truong ((cong van) OR (cong vang)) thanh ban*.