You can put 'wildcards' in a search engine. One grandfather didn't appear in one set of records but his name had been wrongly transcribed when I found it. So for example if you are looking for Sawdon try putting an asterisk for some of the letters. The first letter of my grandfather's surname had been transcribed as L whereas it should have been S.
Lost Cousins website has some help on 'brick walls'.
Alison Hammond waxwork. Is it a joke?
To go through chemo therapy or choose not to?