Perhaps you should try some spelling variations:
sach tham » sach nha
hieu van » hieu va, thien van, lieu va
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
sai cua » dai cua, hai cua, lai cua
dan sai » danh sai, doan sai, dan tai
thuc va » thuc vat, thuc dan, thuc day
bang xa » bang va, mang xa, ang xa
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
van am » van nam, van lam, van dam
va dan » ca dan, va dao, va dau

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 tham ((bang xa) or (((lang xa) or (dang xay)))) hoi. hieu van am thuc va dan sai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tham ((bang xa) OR (((lang xa) OR (dang xay)))) hoi. hieu van am thuc va dan sai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach tham ((bang xa) or (((lang xa) or (dang xay)))) hoi. hieu van am thuc va dan sai cua tre*.