"Sagasu" means "to search."
Even though the above web page deals with a software package by the same
name, it has the translation and a recorded pronunciation of sagasu.
"Sensei" has several meanings, but generally translates to "teacher." The
following is from Answers.com.
"A teacher or mentor"
Put them together and we get "to seek a teacher," or more colloquially, it
means "find a teacher."
As an example, if you go to the website named "SenseiSagasu," you end up
at a website also called "FindaTeacher."
If you need any clarification, please feel free to ask.
Google search on: sagasu
Google search on: sensei
Looking Forward, denco-ga - Google Answers Researcher