Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
dang tay » dang xay, dung tay, bang tay
nam qua » nam quan, nam cua, nam mua
nam xuc » cam xuc, nam xua, nam thuc
thi van » thi lan, thi hanh, thi nang
dan tay » ban tay, dao tay, gian tay
cua tre » cua te, cuu tre, cua triet
sach o » sach lo, sac o, sach y
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 o ((dang tay) OR (dan tay)) hoi. thi van ((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 o ((dang tay) OR (dan tay)) hoi. thi van ((nam xuc) or (nam qua)) van hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: thu sach o ((dang tay) OR (dan tay)) hoi. thi van ((nam xuc) or (nam qua)) van hanh vi cua tre*.