Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
danh vi » hanh vi, dinh vi, danh di
va cam » va cham, va cac, va cao
luc va » tuc va, loc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ty lang xa hoi. lieu va cam ((luc va) or (duc va)) danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty lang xa hoi. lieu va cam ((luc va) OR (duc va)) danh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty lang xa hoi. lieu va cam ((luc va) or (duc va)) danh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ty lang xa hoi. lieu va cam ((luc va) or (duc va)) danh vi cua triet*.