Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
cuc ban » cua ban, cac ban, cuu ban
duc ban » duc tan, duc van, dua ban
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
va cua » va chua, via cua, ca cua

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 va) or (hieu qua)) cam ((cuc ban) or (duc ban)) hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. ((hieu va) OR (hieu qua)) cam ((cuc ban) OR (duc ban)) hanh va cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu va) or (hieu qua)) cam ((cuc ban) or (duc ban)) hanh va cua tre*.