Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vien cac » vien bach, vien dai, vien da
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
ve cam » ve cham, ve cac, va cam
anh vi » hanh vi, anh va, anh ve
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: thu sach y ((nang ma) OR (nang x)) hoi. hieu ((ve cam) OR (vien cac)) xuc van anh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((nang ma) or (nang x)) hoi. hieu ((ve cam) or (vien cac)) xuc van anh vi cua tre*.