The phrase "a few simple principles" is correct and usable in written English.
You can use it when referring to basic guidelines or rules that are easy to understand and follow.
Example: "In order to achieve success, it's important to adhere to a few simple principles that can guide your actions."
Alternatives: "a handful of basic rules" or "a couple of straightforward guidelines".
Flexibility training follows a few, simple principles.
Western companies can retain control over their core competences by keeping a few simple principles in mind.
But industry analysts and executives were skeptical about the government's ability to produce a high-speed approach to handling thousands of cases with a few simple principles.
The garden home can be yours with a few simple principles and techniques, the centerpiece of which is creative use of containers.
In drafting these proposals, I've adhered to a few simple principles of what a 21st-century food system needs to do.
Through several before/after examples, see how keeping to a few simple principles can impact the learning experience of your students.
To comprehend the biomechanics of flight, a few simple physical principles must be kept in mind.
You can make the business of sports complicated, but these leagues function with a few simple core principles: Owners and players split revenue, and in these collectively bargained leagues, there's a constant back and forth about how to do that fairly.
Importantly, you don't need advanced artificial intelligence, capable of passing the Turing test, to give the illusion of a human mind; psychological research has found that we are primed to anthropomorphise almost anything that vaguely resembles one of us, so there are a few simple design principles that can take advantage of this habit.
By capitalizing on a few simple optical principles we can mitigate the influence on wavefront sensing of light backscattered from multiple layers.
But Chanel formulated a few simple and lucrative principles, from which she never wavered, that changed the way women wanted to dress, while Kawakubo, who reinvents the wheel — or tries to — every season, changed the way one thinks about what dress is.
