Perhaps you should try some spelling variations:
thanh tung » thanh cong
trong dong » trong cong, trong nong, trong dang
hoc thieu » toc thieu, hoc hien
dong toan » dung toan, bong toan, cong toan
ho chieu » theo chieu, doi chieu, mot chieu
vat dung » van dung, va dung, viet dung
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: ((hoc thieu) or (ho chieu)) sach - ((thanh trung) or (thanh tung)) vat dung trong dong toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (ho chieu)) sach - ((thanh trung) OR (thanh tung)) vat dung trong dong toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (ho chieu)) sach - ((thanh trung) or (thanh tung)) vat dung trong dong toan ban*.