Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
vua chua » sua chua, cua chua, tua chua
hieu van » hieu va, thien van, lieu va
va chua » ca chua, va chu, a chua
te sach » toc sach
thuc va » thuc vat, thuc dan
dang xa » dang xay, lang xa, dang ha
y dang » ky dang, 2 dang, _ dang

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 dang xa hoi. hieu van nam ((thuc va) OR (thuc day)) danh ((va chua) or (vua chua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y dang xa hoi. hieu van nam ((thuc va) OR (thuc day)) danh ((va chua) OR (vua chua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y dang xa hoi. hieu van nam ((thuc va) OR (thuc day)) danh ((va chua) or (vua chua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach y dang xa hoi. hieu van nam ((thuc va) OR (thuc day)) danh ((va chua) or (vua chua)) tre*.