cuộc điều tra in inglese:

The Ministry sent the answer to our inquiry.

The police conducted an inquiry which lasted for two years and brought no results

He made an inquiry about the new schedule.

We have just received an inquiry from Kansas concerning your brother.

Maximum time to respond to an inquiry.

The police conducted an inquiry which lasted for two years and brought no results. (Policja przeprowadziła dochodzenie, które trwało dwa lata i nie przyniosło żadnych rezultatów.)

This subject is outside the scope of our inquiry.

Thank you very much if the shipment has already been made and please disregard this inquiry.

He wrote a letter of inquiry to his business contact.