Perhaps you should try some spelling variations:
cao thuoc » cay thuoc, cua thuoc, nam thuoc
thuoc dan » thuoc dang, thuc dan, thuoc ban
dan hanh » dang hanh, dan khanh, dan thanh
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
va cao » va cac, va co, va dao
vi cua » vai cua, di cua
o hoi » co hoi, o hoc, o hai

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 y nang o hoi. lieu va cao thuoc dan hanh vi cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach y nang o hoi. lieu va cao thuoc dan hanh vi cua tre*.