There is a nice chrome extension here : https://chrome.google.com/webstore/detail/quicksearch-for-ibm-conne/mgecppdhghinpakolemfdpkfemnphmid
Quick Search for IBM Connections
Unfortunately it isn't officially supported/ legacy. But code is open to all for re-using.
Currently a lot of features are broken/ not working anymore like groups, bulk tagging etc.
It would be GREAT if HCL could take it over and maintain its functionality.
You can get back to me if you want to hear about more use cases/ added value this extension has.