Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
cua tre » cua te, cuu tre, cua triet
tai cua » thai cua, tai cuc, tri cua
va dung » van dung, va duong, vat dung
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
lang ha » long ha
lang xa » dang xay, lang van
sac ky » cac ky
va nam » van nam, ha nam, va nay

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (sai ky)) ((lang xa) or (lang ha)) hoi. hieu va nam thuc va dung tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) ((lang xa) OR (lang ha)) hoi. hieu va nam thuc va dung tai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) ((lang xa) or (lang ha)) hoi. hieu va nam thuc va dung tai cua tre*.