Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
hieu va » hieu qua
va daoh » va danh, va doanh
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
va dao » ca dao
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 lang xa hoi. ((lieu va) or (hieu va)) cam xuc ((va daoh) or (va dao)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty lang xa hoi. ((lieu va) OR (hieu va)) cam xuc ((va daoh) OR (va dao)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty lang xa hoi. ((lieu va) or (hieu va)) cam xuc ((va daoh) or (va dao)) vi cua tre*.