Perhaps you should try some spelling variations:
ve triet » va trien, su triet
va hanh » van hanh, va thanh, va danh
xa phuc » xuan phuc, qua phuc, van phuc
va phuc » van phuc, va thuc, va phu
su sach » so sach
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
vu sach » vu bach, vu khach
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: ((su sach) OR (vu sach)) ty lang xa hoi. hieu qua ((va phuc) OR (xa phuc)) va hanh vi ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) ty lang xa hoi. hieu qua ((va phuc) or (xa phuc)) va hanh vi ve triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) ty lang xa hoi. hieu qua ((va phuc) or (xa phuc)) va hanh vi ve triet*.