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