Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
danh vai » danh sai, danh va, doanh van
vai cuu » vai cua
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
hang xa » hoang xa, hang va, hang ca
ly hang » ly quang
va cao » va co, va dao, va bao

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 hang xa hoi. lieu ((va cao) OR (va cac)) thuc va danh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ly hang xa hoi. lieu ((va cao) OR (va cac)) thuc va danh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ly hang xa hoi. lieu ((va cao) OR (va cac)) thuc va danh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ly hang xa hoi. lieu ((va cao) OR (va cac)) thuc va danh vai cuu tre*.