Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
thu sach » thuat sach, thuoc sach, thu hoach
xuc van » duc van, luc van, xuc ban
vai cau » va cau, van cau, lai chau
vai cac » va cac, tai cac, voi cac
tu sach » su sach, te sach, tu cach
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) OR (thu sach)) ky nang x hoi. hieu van cham xuc van hanh ((vai cau) OR (vai cac)) tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang x hoi. hieu van cham xuc van hanh ((vai cau) OR (vai cac)) tren~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang x hoi. hieu van cham xuc van hanh ((vai cau) OR (vai cac)) tren*.