Perhaps you should try some spelling variations:
thuoc dang » thuoc dung, thuoc khang, thuc dan
thuc dang » thuc dan, thuc dung, thu dang
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
vai cua » dai cua, hai cua, lai cua
tu cach » tu cac
cham ly » cam ly, cham lai
xay hoi » xa hoi, tay hoi, cay phoi
cua tre » cua te, cuu tre, cua triet
ly van » le van, ly va, ly von

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach ((thuc dang) OR (thuoc dang)) xay hoi. hieu van cham ly van thanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach ((thuc dang) OR (thuoc dang)) xay hoi. hieu van cham ly van thanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu cach ((thuc dang) OR (thuoc dang)) xay hoi. hieu van cham ly van thanh vai cua tre*.