Perhaps you should try some spelling variations:
duc manh » suc manh, duc anh, duc minh
cua tre » cua te, cuu tre, cua triet
xuc ban » duc ban, cuc ban, quoc ban
tu bach » vu bach, tu cach, tu hach
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
tu bac » tu ban, tu cac, tu bat
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bac) or (tu bach)) ky dang xa hoi. hieu ve cac ((duc manh) or (xuc ban)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bac) OR (tu bach)) ky dang xa hoi. hieu ve cac ((duc manh) OR (xuc ban)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu bac) or (tu bach)) ky dang xa hoi. hieu ve cac ((duc manh) or (xuc ban)) hanh vi cua tre*.