Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
sang ma » tang ma, nang ma, sang tao
va hanh » van hanh, va thanh, va danh
lam xuc » cam xuc, lam duoc
van lam » van nam
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
tu sach » su sach, te sach, tu cach
xuc va » duc va, tuc va, luc va
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) or (tu sach)) ky ((nang xa) or (sang ma)) hoi. hieu van lam xuc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ky ((nang xa) OR (sang ma)) hoi. hieu van lam xuc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) ky ((nang xa) or (sang ma)) hoi. hieu van lam xuc va hanh vi cua tre*.