Perhaps you should try some spelling variations:
ve triet » va trien, su triet
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
hau loc » phau hoc
huu loc » muu luoc
va hanh » van hanh, va thanh, va danh
vi ve » va ve, gi ve, ve ve

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 ty lang xa hoi. hieu qua ((hau loc) OR (huu loc)) va hanh vi ve triet~.
• Adding a wildcard symbol may retrieve word variants: so sach ty lang xa hoi. hieu qua ((hau loc) or (huu loc)) va hanh vi ve triet*.