Perhaps you should try some spelling variations:
vat dung » van dung, va dung, viet dung
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
dung co » dung cho, dung cong, dung cua
cua tre » cua te, cuu tre, cua triet
so sac » so sach, so dac
sac ky » cac ky, sai ky
nam tu » nam thu, nam thuc
tu vat » tu va, tu van, tu bat
co cua » con cua, ca cua, cong cua

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky nang xa hoi. ((hieu ve) OR (hieu va)) nam tu vat dung co cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sac ky nang xa hoi. ((hieu ve) OR (hieu va)) nam tu vat dung co cua tre*.