You can use the interlinking articles capability to directly search for articles that can be linked to the content you are working on, without leaving the knowledge base text editor. To make use of this, highlight the portion of the content you would like to hyperlink and click on 
icon on the text editor. In the window that pops up, click on the Solution article tab. You will find that the Suggested article section displays all articles relevant to the content that you hyperlinked and you can fine-tune the results further by using the search bar.
Note: The interlinking articles capability is available from the Blossom plan onwards.