Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nha thuoc, cay thuoc
nhan thuc » nhan luc, dan thuc, toan thuc
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
vi cuu » vi luu, vinh cuu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang x hoi. hieu ve ((nam thu) or (((nam thuoc) or (nhan thuc)))) van hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang x hoi. hieu ve ((nam thu) OR (((nam thuoc) OR (nhan thuc)))) van hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: vu sach y nang x hoi. hieu ve ((nam thu) or (((nam thuoc) or (nhan thuc)))) van hanh vi cuu tre*.