Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
hieu ve » hieu van
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, xuc ban
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa 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 dang ha hoi. ((hieu ve) OR (hieu va)) cam ((xuc van) or (duc tan)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang ha hoi. ((hieu ve) OR (hieu va)) cam ((xuc van) OR (duc tan)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky dang ha hoi. ((hieu ve) OR (hieu va)) cam ((xuc van) or (duc tan)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang ha hoi. ((hieu ve) OR (hieu va)) cam ((xuc van) or (duc tan)) hanh vai cua tre*.