Perhaps you should try some spelling variations:
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh lai » thanh hai, thanh lap, thanh loi
cua triet » cua viet, su triet, va triet
duc danh » duc anh, duc manh, duc hanh
lang van » dang van, tang van, hoang van
tu sach » thu sach, su sach, te sach
nam duc » nam duoc, pham duc, nam thuc
lang xa » lang ha, dang xay
su viet » so viet
va nam » van nam, ha nam, va nay

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((lang xa) OR (lang van)) hoi. lieu va nam duc danh thanh lai ((cua triet) OR (su viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((lang xa) OR (lang van)) hoi. lieu va nam duc danh thanh lai ((cua triet) or (su viet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((lang xa) OR (lang van)) hoi. lieu va nam duc danh thanh lai ((cua triet) or (su viet))*.