Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
van hanh » van thanh, ban hanh, van anh
dung tay » dung tai, dung may, vung tay
nam qua » nam quan, nam cua, nam mua
nam xuc » cam xuc, nam xua, nam thuc
thi lan » thi hanh, thi nang, thi lien
tay hoi » tay ho, tao hoi, tay thai
cua tre » cua te, cuu tre, cua triet
o dung » so dung, do dung, o dong
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) OR (thuoc sach)) o dung tay hoi. thi lan ((nam xuc) OR (nam qua)) van hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuoc sach)) o dung tay hoi. thi lan ((nam xuc) or (nam qua)) van hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuoc sach)) o dung tay hoi. thi lan ((nam xuc) or (nam qua)) van hanh vi cua tre*.