"swiftly develop" is a correct and usable phrase in written English.
You can use it to describe when someone, or something, makes progress at a fast rate. For example: "The new software program swiftly developed under the guidance of experienced engineers."
Beckett and Castle swiftly develop one of the great will-they-won't-they romances on the small screen.
Critics of the deal believe that when those restrictions expire in 10-15 years, Iran would be able to swiftly develop a nuclear weapon.
The Tradewind Task Force also included large numbers of construction and other line of communications units whose role was to swiftly develop the island into a major base.
A case of varicella was defined as an acute disease with moderate fever (< 38.5°C) and vesicular exanthema, which evolves in the form of outbreaks, and gives rise to lesions that swiftly develop from superficial papules into vesicles, and occasionally into scabs.
A railroad strike, begun on October 7 October 200), swiftly developed into a general strike in most of the large cities.
Part II examines the process through which micro financial systems were swiftly developed as a microfoundation of the new "democratic" socio-economy.
The group was formed in 1999, primarily to fight in Kashmir, but swiftly developed links with international militants with a global agenda.
Some authors proposed new frameworks and methodologies that will facilitate further studies and assessments in the swiftly developing field of lean and green integration, while others focused upon conducting literature reviews and drawing interpretations.
Other challenges emerge as governments fail to keep up with swiftly developing technologies, and Haass' book does not address the deep web, a new security challenge and source of global disarray.
The first we heard of his strange, urgent, lyrical voice was combined with the knowledge that, like light from a distant star, its source was already gone; maybe that explains the aura of mystique that swiftly developed around him.
Louis IV d'Outremer granted coinage rights to the archbishop of Reims as early as 850, and the system was swiftly developed in the 10th century, concessions being made to a large number of ecclesiastical foundations and even in a few cases to lay lords as well.
