You need to find a specific Unicode character? With Shapecatcher.com you can search through a database of characters by simply drawing your character into a box. It can find the most similar character shapes for your drawing.
You can use words or symbols called search operators to filter your Gmail search results. You can also combine operators to filter your results even more.
How to use a search operator Go to
C. Krishnan, S. Rajakumari, and M. Mehraj. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (4):
1750--1754(April 2015)