Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc vat » thuc vat, thuoc va, thuoc bat
vat hanh » vat thanh, van hanh, va hanh
lang van » dang van, hoang van, giang van
tang van » dang van, hoang van, trong van
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
hieu va » lieu va, hieu qua
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
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: vu sac ky ((lang van) or (tang van)) hoi. hieu va nam thuoc vat hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky ((lang van) OR (tang van)) hoi. hieu va nam thuoc vat hanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: vu sac ky ((lang van) or (tang van)) hoi. hieu va nam thuoc vat hanh vi ((cua tre) or (cuu tre))*.