Perhaps you should try some spelling variations:
thien van » thi van
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
xay hoi » xa hoi, tay hoi, cay phoi
nam xuc » cam xuc, nam xua, nam thuc
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
y dang » ky dang, 2 dang, o dang
b dang » 2 dang, o dang, ban dang
_ dang » _ dan, 2 dang, _ danh
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((((y dang) OR (b dang))) or (_ dang)) xay hoi. thien van nam xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((((y dang) OR (b dang))) OR (_ dang)) xay hoi. thien van nam xuc van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((((y dang) OR (b dang))) or (_ dang)) xay hoi. thien van nam xuc van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ((((y dang) OR (b dang))) or (_ dang)) xay hoi. thien van nam xuc van hanh vi cua tre*.