Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thuc day » thuc dan, thuc vat
te sach » toc sach
lang ha » long ha
thuc va » thuc vat, thuc dan
dinh va » dinh van, dinh ve, tinh va
cua tre » cua te, cuu tre, cua triet
y lang » o lang, _ lang, tay lang
ha hoi » hoa hoi, ha noi, xa hoi
van am » van nam, van lam, van dam
va cua » va chua, via cua, ca 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 y lang ha hoi. hieu van am ((thuc va) or (thuc day)) dinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang ha hoi. hieu van am ((thuc va) OR (thuc day)) dinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y lang ha hoi. hieu van am ((thuc va) or (thuc day)) dinh va cua tre*.