Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
van dinh » van minh, van dich, va dinh
cac loai » cac bai, cac giai, cac dai
tu sach » thu sach, su sach, tu cach
dinh va » dinh van, dinh ve, tinh va
cac lao » ca lao, cac giao, cac lang
nang xa » nang x, lang xa, nang ma
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua

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: ((tu sach) OR (te sach)) ky nang xa hoi. hieu hien ((cac lao) OR (cac loai)) van dinh va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang xa hoi. hieu hien ((cac lao) OR (cac loai)) van dinh va cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang xa hoi. hieu hien ((cac lao) OR (cac loai)) van dinh va cua tre*.