Perhaps you should try some spelling variations:
vu sach » su sach, vu khach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cuu tre » cua tre, cau tren, cau treo
vang xa » lang xa, mang xa, ang xa
y vang » ly vang
luc va » duc va, tuc va
loc va » hoc va
vi cuu » vi luu, vinh cuu

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) OR (vu bach)) y vang xa hoi. hieu va cham ((luc va) or (loc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) y vang xa hoi. hieu va cham ((luc va) OR (loc va)) hanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu bach)) y vang xa hoi. hieu va cham ((luc va) or (loc va)) hanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu bach)) y vang xa hoi. hieu va cham ((luc va) or (loc va)) hanh vi cuu tre*.