Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hoc sach » hoc sinh, hoc cac, hoc anh
chat xuc » chat huu, cam xuc, chao xu
bo sach » co sach
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
vu sach » vu bach, su sach, vu khach
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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: ((vu sach) OR (((bo sach) OR (hoc sach)))) ky nang x hoi. hieu va chat xuc va danh vi cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (((bo sach) OR (hoc sach)))) ky nang x hoi. hieu va chat xuc va danh vi cua viet~".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (((bo sach) OR (hoc sach)))) ky nang x hoi. hieu va chat xuc va danh vi cua viet*.