The closest facility sovler finds the specified number of facilities from each incident. So if you have 34 incidents and 5 facilities, set the CF properties to find 5 facilities and solve. if you are getting less than your 34 times 5 or 170 routes, then there is probably some network dataset issue that says there are no paths between your sets of locations. This could be due to some barrier or other restrictions or could be bad connectivity in your data.
So what network dataset are you using and what restrictions do you have on?
Jay Sandhu