Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
van cap » van cau, van dap, van ca
vi cua » vai cua, di cua
cua te » cua tu

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: thuat sach ((ty nang) OR (ty hang)) x ho. hieu van cap cuu van hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ty nang) or (ty hang)) x ho. hieu van cap cuu van hanh vi cua te*.