Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cham xuc » cam xuc, chat xuc, cham soc
vu sach » vu bach, su sach, vu khach
vang xa » lang xa, mang xa, ang xa
hieu ve » hieu va
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
y vang » ly vang
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y vang xa hoi. ((hieu ve) OR (hieu van)) cham xuc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y vang xa hoi. ((hieu ve) OR (hieu van)) cham xuc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach y vang xa hoi. ((hieu ve) OR (hieu van)) cham xuc va hanh vi cua tre*.