Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
tu sach » su sach, te sach, tu cach
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho
vu va » vu van, tu va, su 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) OR (tu sach)) ky nang x hoi. hieu van cau xuc va hanh ((vi van) OR (vu va)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ky nang x hoi. hieu van cau xuc va hanh ((vi van) or (vu va)) triet~".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) ky nang x hoi. hieu van cau xuc va hanh ((vi van) or (vu va)) triet*.