Cannot Search Effectively on Screen

I know you should be able to search the screen

C-a /

      

        
        
        
      

    

or

C-a ?

      

        
        
        
      

    

or

C-a s

      

        
        
        
      

    

or

C-a r

      

        
        
        
      

    

However, none of the commands work for me. I have the following .screenrc.

My .screenrc

markkeys h=d:j=h:k=t:l=n

# to change the escape key from ^Aa to 
# NB ^n to move btw Screens
escape ^Tt

# I want to use Vim navigation keys
bind h focus down 
bind t focus up

### Keybindings# {{{

# to disable xoff
bind s

# remove some key bindings                                                                                                                                                                                    
bind W
#bind ^\
#bind \\
bind ^h

# same as C-a "
bind 'W' windowlist

      

        
        
        
      

    

How do you efficiently search the screen so that you get all the matches?