Perhaps you should try some spelling variations:
cao thuc » cao thuoc, bao thuc, can thuc
toc sach » hoc sach, doc sach, thuoc sach
thuc va » thuc vat, thuc dan, thuc day
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
va cao » va cac, va co, va 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) or (toc sach)) ly nang xa hoi. lieu va cao thuc va danh ((vai cuu) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ly nang xa hoi. lieu va cao thuc va danh ((vai cuu) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ly nang xa hoi. lieu va cao thuc va danh ((vai cuu) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ly nang xa hoi. lieu va cao thuc va danh ((vai cuu) OR (vai cua)) tre*.