Perhaps you should try some spelling variations:
truong huong » truong phuong, truong thuong, truong vuong
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cua truong » cua trung, xuan truong, cac truong
dien sach » dien anh
trung cua » truong cua, trung tuan, trung cap
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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

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