Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dang xay » dang van, van xay
danh tai » doanh tai, dinh tai, hanh tai
nam thuc » nam thuoc, am thuc, nam thu
lang van » dang van, tang van, hoang van
sach ky » sac ky, sach y, sach ty
lang xa » lang ha
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
tai cua » thai cua, tai cuc, tri cua
va nam » van nam, ha nam, va nay
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky ((((lang xa) OR (dang xay))) or (lang van)) hoi. lieu va nam thuc va danh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky ((((lang xa) OR (dang xay))) OR (lang van)) hoi. lieu va nam thuc va danh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky ((((lang xa) OR (dang xay))) or (lang van)) hoi. lieu va nam thuc va danh tai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((((lang xa) OR (dang xay))) or (lang van)) hoi. lieu va nam thuc va danh tai cua te*.