Perhaps you should try some spelling variations:
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
toc sach » hoc sach, thuoc sach, nuoc sach
doc sach » hoc sach, nuoc sach, dac sac
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
cua tre » cua te, cuu tre, cua triet
y dang » ky dang, 2 dang, _ dang
ve cam » ve cham, ve cac, va cam
cam tu » cam thu, nam tu, dam tu
tu van » tu va
vi cua » vai 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 (((toc sach) OR (doc sach)))) y dang xay hoi. hieu ve cam tu van hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (((toc sach) OR (doc sach)))) y dang xay hoi. hieu ve cam tu van hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (((toc sach) OR (doc sach)))) y dang xay hoi. hieu ve cam tu van hanh vi cua tre*.