One can use the Outlook search function to find the lost emails. Yet this function is great but many times when it stops working it can create a situation of trouble. If your Outlook search is not working then you can try the fixtures given in this blog. If you are not interested in troubleshooting then you should get in touch with Outlook customer care number that stays actively available 24 hours of the day.
A lot of causes can be the behind the Outlook search not working, but you can fix this with solutions that are enlisted below.
As a last resort if the search does not seem to be working then you should uninstall Microsoft Outlook and then reinstall it. Yes, it might eat up your time but you can do so to fix the issue.
It is commonly noticed that rebuilding and refreshing the Outlook search index usually gets things sorted but if this is not the case with you then you can also try to repair the Outlook personal files as another suitable option.
In case if you find any trouble during the whole troubleshooting or have any doubts then you are free to avail the Outlook technical support from the technical representatives who stay 24x7 online for providing suitable solutions to their users.