update for website

my website is written in c# the name of the site is hocanitani.com you can look. I want to change the search engine at this moment our engine just searching for Turkish words ı want to change that to English one. For example ım looking for a pro which name is yiğit sayın if ı wanna type yigit sayin the site give me no answer ı want to change that. Also some other little adjustments but the rest is pretty is just visual think. I can share the codes.