How to create a search function using nhibernate, linq?

I am about to create a search function today, C # asp.net. I need a push to get it rolling. I am using nhibernate linq. it would be nice to do it with a linq query. it should be dynamic, I will have multiple search criteria like gender, email, name, age and some others.

this search term is only suitable for my client object.

How can i do this? and how is it done correctly?

Now I think I am getting an iqueryable and querying this. I think so, for example, for gender, I have two checkboxes, so I execute if a man checks that I do where.gender == "Man", and if none is checked, I do nutting. but is this the way to do it for every request? because some users enter like name, email, age.

please advise me about it