Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
cau treo » cau theo, cau tren, cau trieu
thuc cac » thuc cach, tuc cac, phuc cac
nam thuc » nam thuoc, am thuc, nam thu
toc sach » hoc sach, doc sach, thuoc sach
lang van » dang van, tang van, hoang van
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay
dan vat » dang vat, van vat, dan va
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay

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 (lang van)) hoi. hieu va nam thuc cac dan vat ((cau treo) OR (cau triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky ((lang xa) OR (lang van)) hoi. hieu va nam thuc cac dan vat ((cau treo) OR (cau triet))".
• Adding a wildcard symbol may retrieve word variants: toc sach ky ((lang xa) OR (lang van)) hoi. hieu va nam thuc cac dan vat ((cau treo) OR (cau triet))*.