Perhaps you should try some spelling variations:
chua duoc » chua nuoc, cua duoc, chuan quoc
dung tren » dung trong, dung trung
van hanh » van thanh, ban hanh, van anh
chu dich » chu tich, chu dinh, chu thich
te sach » toc sach
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
nang o » nang co, nang ho, nang ro
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. hieu ve ((chu dich) or (chua duoc)) van hanh kem ((dung tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang o hoi. hieu ve ((chu dich) OR (chua duoc)) van hanh kem ((dung tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang o hoi. hieu ve ((chu dich) or (chua duoc)) van hanh kem ((dung tren) or (cuu tre))*.