Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
vu sach » vu bach, su sach, vu khach
so sanh » do sanh
qua cac » cua cac
cac toc » cac toi, cac nuoc, cac thoi
toc va » hoc va, toc ta, tuc va
vi cua » vai cua, di cua
cua te » cua tu
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) or (so sanh)) cam nang x hoi. hieu qua cac toc va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sanh)) cam nang x hoi. hieu qua cac toc va thanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sanh)) cam nang x hoi. hieu qua cac toc va thanh vi cua te*.