Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nam thuoc » nam thu, nha thuoc, cay thuoc
nam thuc » am thuc, nam thu, nam tu
lang van » dang van, tang van, hoang van
vai cuu » vai cua
dan vai » dan va, dan tai, dan vat
hieu ha » hieu hoa, hieu va, hieu ca
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay
cuu tre » cua tre, cau tren, cau treo
va dan » ca dan, va dao, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky ((lang xa) or (lang van)) hoi. hieu ha ((nam thuoc) OR (nam thuc)) va dan vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky ((lang xa) OR (lang van)) hoi. hieu ha ((nam thuoc) OR (nam thuc)) va dan vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky ((lang xa) or (lang van)) hoi. hieu ha ((nam thuoc) OR (nam thuc)) va dan vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((lang xa) or (lang van)) hoi. hieu ha ((nam thuoc) OR (nam thuc)) va dan vai cuu tre*.