Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
ban hanh » ban hang
hieu van » hieu va, thien van, lieu va
sang tao » hang tai
sach ky » sac ky, sach y, sach ty
van lam » van nam
lam xuc » cam xuc, lam duoc
sang ma » tang ma, nang ma, mang may
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: thu sach ky ((sang ma) OR (sang tao)) hoi. hieu van lam xuc ((ban hanh) or (van thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((sang ma) OR (sang tao)) hoi. hieu van lam xuc ((ban hanh) OR (van thanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((sang ma) OR (sang tao)) hoi. hieu van lam xuc ((ban hanh) or (van thanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ky ((sang ma) OR (sang tao)) hoi. hieu van lam xuc ((ban hanh) or (van thanh)) vi cua tre*.