Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ban anh » ban hanh, ban banh, ban danh
xuc ban » duc ban, cuc ban, quoc ban
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
sang ma » tang ma, nang ma, sang tao
anh vi » hanh vi, anh va, anh ve
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 ty ((sang ma) or (van xay)) hoi. ((hieu ve) OR (hieu va)) cam xuc ban anh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((sang ma) OR (van xay)) hoi. ((hieu ve) OR (hieu va)) cam xuc ban anh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((sang ma) or (van xay)) hoi. ((hieu ve) OR (hieu va)) cam xuc ban anh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((sang ma) or (van xay)) hoi. ((hieu ve) OR (hieu va)) cam xuc ban anh vi cua tre*.