Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cuc ban » cua ban, duc ban, coc ban
cuu ban » cuu van, cua ban, cuu san
cac ban » cac dan, cac van, can ban
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
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 nang xa hoi. hieu ve cam ((((cuc ban) OR (cuu ban))) or (cac ban)) chinh tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. hieu ve cam ((((cuc ban) OR (cuu ban))) OR (cac ban)) chinh tri cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu ve cam ((((cuc ban) OR (cuu ban))) or (cac ban)) chinh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu ve cam ((((cuc ban) OR (cuu ban))) or (cac ban)) chinh tri cua tre*.