No, you can search for a phrase by surrounding it in quotes, but that's about the extent of it. I opened a suggestion to have the feature improved:
Please watch and vote for the suggestion to emphasize it.
...from the beginning. We have built up a lot of content in HipChat, with it being a core tool in our distributed company model. While it is true that we didn’t need to move to Slack immediately, we felt it...
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