Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » hieu va, thien van, lieu va
thuoc va » thuc va, thuoc ma, thuong va
tu cach » tu cac
te sach » toc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van lam » van nam
va hanh » van hanh, va thanh, va danh
ca tren » cau tren, cu tren, la tren
vi ca » vit ca, li ca, va ca

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) or (te sach)) ky lang xa hoi. hieu van lam thuoc va hanh vi ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky lang xa hoi. hieu van lam thuoc va hanh vi ca tren.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky lang xa hoi. hieu van lam thuoc va hanh vi ca tren*.