There is already a bit of advanced syntax. Any use of quotation marks will enable it. For example, is you search for... latex "donald knuth" That will sea

There is already a bit of advanced syntax. Any use of quotation marks will enable it. For example, is you search for... latex "donald knuth" That will search for any comment that has latex anywhere in the text and donald and knuth next to each other. So you could trigger the advanced syntax by putting latex in quotes and search for any commment that contains latex and text anywhere in the comment: "latex" text