Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
tai cua » thai cua, tai cuc, tri cua
va tinh » may tinh
te sach » toc sach
van lam » van nam
ly vang » ly hang, ly van, ly quang
ly nang » ky nang, ly hang, ly quang
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ly nang) OR (ly vang)) xa hoi. hieu van lam thuoc ((va tinh) or (ban thanh)) tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ly nang) OR (ly vang)) xa hoi. hieu van lam thuoc ((va tinh) OR (ban thanh)) tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly nang) OR (ly vang)) xa hoi. hieu van lam thuoc ((va tinh) or (ban thanh)) tai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) OR (ly vang)) xa hoi. hieu van lam thuoc ((va tinh) or (ban thanh)) tai cua tre*.