Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
ky dang » ky danh
hieu ve » hieu va, hieu van
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
ve cam » ve cham, ve cac, va cam

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) OR (ky nang)) xa hoi. hieu ve 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) OR (ky nang)) xa hoi. hieu ve 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) OR (ky nang)) xa hoi. hieu ve cam ((xuc van) or (duc tan)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky dang) OR (ky nang)) xa hoi. hieu ve cam ((xuc van) or (duc tan)) hanh vai cua tre*.