Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
ly nang » ky nang, ly hang, ly vang
nang ma » tang ma, sang ma, nang cao
vu sach » vu bach, su sach, vu khach
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
te sach » toc sach
ma hoi » mai hoi, xa hoi, ma hoa
soc va » hoc va, loc va, doc va
vi cua » di cua

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: ((te sach) OR (vu sach)) ly nang ma hoi. hieu van cham soc va hanh ((vi cua) OR (vai cua)) viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (vu sach)) ly nang ma hoi. hieu van cham soc va hanh ((vi cua) OR (vai cua)) viet~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (vu sach)) ly nang ma hoi. hieu van cham soc va hanh ((vi cua) OR (vai cua)) viet*.