Are there aircraft with multiple inlets for a turbojet engine? Are there aerial vehicles which have multiple inlets with air ducts (shaped in S-forn) , which all lead the air to one single turbojet engine?
I have not enough space to put just one inlet area on my vehicle, so I thought about using inlets, located at the sides.
I think it is really difficult to combine the air of all inlets so that there is a uniform air flow in front of the turbojet -  because I don't have much space inside my vehicle.
Besides, I think is is really challenging when it comes to some maneuvers, where the flow sometimes will not flow through one of these inlets.
What do you think and do you know any vehicle from history?
It’s common on military fighters. For instance most single engine fighters eg F-35, JAS-39, J-18, etc. will have a pair of inlets on either side of the fuselage feeding these single engine.  Some aircraft will have auxiliary air intakes eg B-2, F-117, F-22, MiG-29/35, SU-27/30/33, etc. to provide additional air on takeoff or other high power settings or to provide protection against FOD ingestion.