Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
chat xuc » chat huu, cam xuc, chao xu
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu van
sach ky » sac ky, sach y, sach ty
cac xuc » cam xuc, cac nuoc, cac cuoc
nang co » nang cao, nang doc, nang noi
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
co hoi » co hoc, co loi
vi cau » va cau, ve cau, di cau

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: thuoc sach ky nang co hoi. ((hieu ve) OR (hieu va)) ((cac xuc) OR (chat xuc)) va hanh vi cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang co hoi. ((hieu ve) OR (hieu va)) ((cac xuc) or (chat xuc)) va hanh vi cau tren~".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang co hoi. ((hieu ve) OR (hieu va)) ((cac xuc) or (chat xuc)) va hanh vi cau tren*.