Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sach ky » sac ky, sach ty, sach kem
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
co xuc » co xuoc, co xua
va co » vo co
de va » de van, ke va, le va
te va » tu 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: thu ((sach ky) OR (sach y)) nang xa hoi. hieu va co xuc va hanh ((de va) OR (te va)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sach y)) nang xa hoi. hieu va co xuc va hanh ((de va) OR (te va)) triet~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sach y)) nang xa hoi. hieu va co xuc va hanh ((de va) OR (te va)) triet*.