Google-powered search bar suddenly returning totally different results than usual - User Intent?

[missus]

Our website has a Google powered search bar and for some popular keywords it has always returned the same results but for the past week it has been returning totally different and nonsensical results with the previous top 2 entries now on the 2nd and 4th pages of the results. It seems to be mixing up two separate keywords which the same user may search for but which both mean two very different things. Is this a User Intent issue do you think? Anyone know if there's anything we can do to stop it? I'm guessing not...

[seoman10]

If you are talking about Google Site Search / Google Custom Search Engine it is being discontinued.  See https://cse.google.com/cse/

You will probably find it start showing ads and all sorts of funny things.