Perhaps you should try some spelling variations:
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chao xu
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
tu lang » cu lang, tu lanh, xu lang
cua tre » cua te, cuu tre, cua triet

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 tu lang xa hoi. ((hieu ve) or (hieu va)) chat xuc ((va hanh) or (ban hanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu lang xa hoi. ((hieu ve) OR (hieu va)) chat xuc ((va hanh) OR (ban hanh)) hai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tu lang xa hoi. ((hieu ve) or (hieu va)) chat xuc ((va hanh) or (ban hanh)) hai cua tre*.