Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
dang van » hoang van, hang va
hieu van » hieu va, thien van, lieu va
tai cuu » tai cuc, tai buu, tai cua
dao dan » dao van, cao dang, dao dong
day dan » day danh, cay dan, bay dan
cuu tre » cua tre, cau tren, cau treo
lang xa » lang ha, dang xay, lang van
san ky » sang ky, van ky, dan ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc san ky ((lang xa) or (dang van)) hoi. hieu van nam thuc ((day dan) or (dao dan)) tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc san ky ((lang xa) OR (dang van)) hoi. hieu van nam thuc ((day dan) OR (dao dan)) tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: toc san ky ((lang xa) or (dang van)) hoi. hieu van nam thuc ((day dan) or (dao dan)) tai cuu tre*.