Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hanh sua » hinh su, hanh va, hanh tu
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
ve cam » ve cham, ve cac, va cam
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
sua va » suat va, vua va, xua va

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: so sach y ((nang xa) OR (lang xa)) hoi. hieu ve cam ((luc va) OR (tuc va)) hanh sua va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y ((nang xa) OR (lang xa)) hoi. hieu ve cam ((luc va) or (tuc va)) hanh sua va triet~".
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang xa) OR (lang xa)) hoi. hieu ve cam ((luc va) or (tuc va)) hanh sua va triet*.