Perhaps you should try some spelling variations:
dao thuc » dan thuc, dao tuc, do thuc
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, v nang, may nang
va dao » ca dao

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 nang) OR (ly nang)) x ho. lieu va dao thuc va hanh ((vai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) x ho. lieu va dao thuc va hanh ((vai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) x ho. lieu va dao thuc va hanh ((vai cua) or (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) x ho. lieu va dao thuc va hanh ((vai cua) or (hai cua)) tre*.