Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cau tren » cu tren, dau tren, ca tren
hanh vai » hanh vi, hanh va, hanh tai
van tham » van tuan, van chat, van tai
va hanh » van hanh, va thanh, va danh
vai cau » va cau, van cau, vai cac
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
xuc va » duc va, tuc va, luc va
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: tu sach ((y nang) OR (v nang)) x hoi. hieu ((van tham) OR (van thanh)) xuc va hanh vai cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (v nang)) x hoi. hieu ((van tham) OR (van thanh)) xuc va hanh vai cau tren~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) x hoi. hieu ((van tham) OR (van thanh)) xuc va hanh vai cau tren*.