Perhaps you should try some spelling variations:
cua truong » cua trung, xuan truong, cac truong
hieu sach » chieu sach, hieu cach, dien sach
tranh cua » doanh cua, manh cua
duong tan » duong tuan, duong van, duong tai
doc hieu » toc thieu, hoc thieu, hoc hien
dong tan » dong tai, dong san, cong tan
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 hieu sach - canh tranh cua truong ((dong tan) or (duong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - canh tranh cua truong ((dong tan) OR (duong tan)) toan cao*.