Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac toc » cac toi, cac nuoc, cac thoi
va hang » van hang, va nang, va lang
ve cac » va cac, vien cac
toc va » hoc va, toc ta, tuc va
dai va » mai va
di va » di vao, doi va, di vat

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach _ lang xa hoi. hieu ve cac toc va hang ((di va) OR (dai va)) triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach _ lang xa hoi. hieu ve cac toc va hang ((di va) OR (dai va)) triet*.