Twitter seems to be down (partly): <a href="https://news.ycombinator.com/item?id=33943029" rel="nofollow">https://news.ycombinator.com/item?id=33943029</a>
It says "This is an invalid search query. Please try a different one." rather than there being an error in performing the search.<p>Searching for "telegram" (with the quotes) does give results.