Perhaps you should try some spelling variations:
cay thuoc » cua thuoc, nam thuoc, va thuoc
van thanh » ban thanh, van tuan
nhan thuc » nhan luc, dan thuc, toan thuc
thanh vi » hanh vi, thanh va, thanh ve
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
vi cua » vai cua, di cua
cua su » qua su
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: su sach y nang o hoi. hieu ve ((nam thu) or (((cay thuoc) or (nhan thuc)))) van thanh vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang o hoi. hieu ve ((nam thu) OR (((cay thuoc) OR (nhan thuc)))) van thanh vi cua su.
• Adding a wildcard symbol may retrieve word variants: su sach y nang o hoi. hieu ve ((nam thu) or (((cay thuoc) or (nhan thuc)))) van thanh vi cua su*.