Perhaps you should try some spelling variations:
danh tai » doanh tai, dinh tai, hanh tai
nam thuc » nam thuoc, am thuc, nam thu
te sach » toc sach
cuc tre » duc tre, cuu tre, cuc thue
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
lang xa » dang xay, lang van
lang ha » long ha
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
ve nam » he nam, va nam, le nam

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