Perhaps you should try some spelling variations:
mang cua » manh cua, dung cua, ban cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
cac tu » cac thu, cach tu, cac du
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: te sach ky ((mang cua) or (lang xa)) hoi. ((hieu ve) or (hieu va)) cac tu va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((mang cua) OR (lang xa)) hoi. ((hieu ve) OR (hieu va)) cac tu va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((mang cua) or (lang xa)) hoi. ((hieu ve) or (hieu va)) cac tu va hanh vi cua tre*.