Perhaps you should try some spelling variations:
hanh dinh » thanh dinh, hinh dinh, hanh tinh
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
dinh cua » dinh cuu, sinh cua, dinh cu
hieu ve » hieu va
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((x hoi) OR (x ho)). ((hieu ve) or (hieu van)) cac xuc van hanh dinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((x hoi) OR (x ho)). ((hieu ve) OR (hieu van)) cac xuc van hanh dinh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((x hoi) OR (x ho)). ((hieu ve) or (hieu van)) cac xuc van hanh dinh cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) OR (x ho)). ((hieu ve) or (hieu van)) cac xuc van hanh dinh cua tre*.