Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
danh tai » doanh tai, dinh tai, hanh tai
vat danh » va danh, van danh, luat danh
nam thuc » nam thuoc, am thuc, nam thu
tang van » dang van, hoang van, trong van
hoc sach » hoc sinh, hoc cac, hoc anh
lang xa » lang ha, dang xay, lang van
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) OR (hoc sach)) y ((lang xa) or (tang van)) hoi. lieu va nam thuc vat danh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) y ((lang xa) OR (tang van)) hoi. lieu va nam thuc vat danh tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) y ((lang xa) or (tang van)) hoi. lieu va nam thuc vat danh tai cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) OR (hoc sach)) y ((lang xa) or (tang van)) hoi. lieu va nam thuc vat danh tai cua te*.