Search Query with multiple fields Winforms

Question

I need to write a SQL Query for search with multiple fields .

I wrote this sql query but i can't make it work correctly 

(User select  check-box, choose a date between two dates and select Client Name from ComboBox.)

My query something like this :

private void btnRechercher_Click(object sender, EventArgs e)
        {
if (radBtnExport.Checked==true||radBtnImport.Checked==true||radBtnTransit.Checked==true||dateFin.Value>dateDebut.Value||comboBox1.SelectedValue.ToString()=="")
        {
           SqlConnection con = new SqlConnection("Data Source=Admin-PC\\SQLEXPRESS;Initial Catalog=timar;Integrated Security=True");

            SqlDataAdapter sda = new SqlDataAdapter("Select * from Devis_C_L,Client where Devis_C_L.ClientId = Client.idClient and NomClient='" + comboBox1.Text + "' or Sense='Transit' or Sense='Export' or Sense='Import' and DateTransport between '" + dateDebut.Value.Date.ToShortDateString() + "' and'" + dateFin.Value.Date.ToShortDateString() + "' ", con);
            DataTable dt = new DataTable();
            sda.Fill(dt);
           dataGridView1.DataSource = dt;

        }
}

 Please help me !

Thanks in Advance.