Perhaps you should try some spelling variations:
thien van » thi van
ban thuat » ban than, va thuat, ban chat
thuat vat » thuat va, thuc vat, thuat xay
vat hanh » vat thanh, van hanh, va hanh
vu sach » vu bach, su sach, vu khach
vang xa » lang xa, mang xa, ang xa
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
y vang » ly vang

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: vu sach y vang xa hoi. thien van ban thuat vat hanh vi ((cua tre) OR (cuu tre))~.
• Adding a wildcard symbol may retrieve word variants: vu sach y vang xa hoi. thien van ban thuat vat hanh vi ((cua tre) or (cuu tre))*.