Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
nam thuc » nam thuoc, nam thu, nam tu
vai cuu » vai cua
dan vai » dan va, dan tai, dan vat
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
va dan » ca dan, va dao, va dau
ha hoi » hoa hoi, ha noi, va hoi

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 tay lang ((ha hoi) or (xa hoi)). hieu va ((nam thuc) OR (am thuc)) va dan vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach tay lang ((ha hoi) OR (xa hoi)). hieu va ((nam thuc) OR (am thuc)) va dan vai cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach tay lang ((ha hoi) or (xa hoi)). hieu va ((nam thuc) OR (am thuc)) va dan vai cuu tre*".