Perhaps you should try some spelling variations:
thien van » thi van
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
xuc ban » duc ban, quoc ban, xuat ban
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
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: tu sach ky ((mang may) or (van xay)) hoi. thien van cam ((xuc ban) OR (cuc ban)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((mang may) OR (van xay)) hoi. thien van cam ((xuc ban) OR (cuc ban)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((mang may) or (van xay)) hoi. thien van cam ((xuc ban) OR (cuc ban)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((mang may) or (van xay)) hoi. thien van cam ((xuc ban) OR (cuc ban)) hanh vi cua tre*.