Perhaps you should try some spelling variations:
vuc nang » cuc nang, vu nang, chuc nang
chat duc » chat xuc, chat doc, chet duoc
te sach » toc sach
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
vi cua » vai cua, di cua

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 ((v nang) or (vuc nang)) xa hoi. hieu ve chat duc va danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (vuc nang)) xa hoi. hieu ve chat duc va danh vi cua tre*.