In order to…
for this reason; so as to do this
(‘in order to’ is followed by a verb)
He went back to the school in order to return his books.
She cut her hair in order to stop her ex-boyfriend recognising her.
You will need to extend the garage in order to fit in your new car.
In order to understand why the company had fired him, Dave began to ask his old colleagues if they had heard anything.