Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
cuu ban » cuu van, cuu san, cuu nang
ky dang » ky nang
ky danh » ky anh
hieu ve » hieu va, hieu van
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua
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 danh)) xa hoi. hieu ve cam ((cua ban) or (cuu ban)) danh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky dang) OR (ky danh)) xa hoi. hieu ve cam ((cua ban) OR (cuu ban)) danh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((ky dang) OR (ky danh)) xa hoi. hieu ve cam ((cua ban) or (cuu ban)) danh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky dang) OR (ky danh)) xa hoi. hieu ve cam ((cua ban) or (cuu ban)) danh vi cua tre*.