Perhaps you should try some spelling variations:
van nhanh » van thanh, van hanh, van khanh
nhanh tai » nhanh thai, nhan tai, thanh tai
phan duc » pham duc, phan tu, phan dau
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cuc tre » duc tre, cuu tre, cuc thue
cua tre » cua te, cuu tre, cua triet
su tai » su thi, tu tai
tai ky » thai ky, trai ky, sai ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su tai ky nang xa hoi. hieu ve ((phan duc) OR (cham soc)) van nhanh tai ((cuc tre) OR (cua tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su tai ky nang xa hoi. hieu ve ((phan duc) or (cham soc)) van nhanh tai ((cuc tre) OR (cua tre))~".
• Adding a wildcard symbol may retrieve word variants: su tai ky nang xa hoi. hieu ve ((phan duc) or (cham soc)) van nhanh tai ((cuc tre) OR (cua tre))*.