Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
tay lang » tai lang, tay tang, tay quang
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
hieu ha » hieu hoa, hieu va, hieu ca
van hoi » van hoa, van hoc, van hoe
cua tre » cua te, cuu tre, dua tren
y lang » o lang, _ lang, yen lang
va anh » van anh, va danh, va hanh
anh va » hanh va

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