Matching by similarity will match words that contain similar word components, e.g. Brown will bring up results for Brown and Browne.
Undersores _ can be used to substitute characters, e.g. Franc_s will bring up results for Frances and Francis.
Percentage Symbol % can be used to replace a number of characters, e.g. N%lor will bring up results for Naylor and Nailor.
You can combine Underscores _ and Percentages % to get a greater variety of results! E.g. N%l_r will bring up results for Naylor, Nailor and Nailer.