Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
ky lang » ky nang, ky dang, ky tang
ve cao » va cao, ve bao, ve cac
va bao » va bai
tu san » thu san, tu ban, tu can
vi cua » vai cua, di cua
tu sac » tu sach, tu cac, tu bac

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) OR (tu san)) ky lang xa hoi. hieu ((ve cao) or (va bao)) duc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu san)) ky lang xa hoi. hieu ((ve cao) OR (va bao)) duc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu san)) ky lang xa hoi. hieu ((ve cao) or (va bao)) duc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) OR (tu san)) ky lang xa hoi. hieu ((ve cao) or (va bao)) duc va hanh vi cua tre*.