"principles and rules" is correct and usable in written English.
You could use it any time you want to refer to two related concepts, such as "We must follow all the principles and rules in order to succeed."
"It's also about respect for the principles and rules of democracy.
Both municipal and international judicial decisions can serve to establish new principles and rules.
It] develops those principles and rules and places them in the context of the information society.
They test "inductive reasoning, measuring the ability to identify patterns and infer principles and rules", say the researchers in their paper in the British Medical Journal.
"I saw my world go up in flames before my eyes…the little world of family continuity…of values, principles and rules".
We start with the premise that individuals and organizations at any point in time hold certain theories, models, principles, and rules of thumb that guide their actions.
Interface design methods (e.g., user-centered design, prototyping, and design principles and rules), and interface evaluation (e.g., software logging, user observation, benchmarks and experiments).
However, this rise in popularity has not been accompanied by an increasing awareness of the principles and rules that should guide the design of these visualizations.
He also is of the opinion that something like this can be avoided worldwide if the authorities strictly followed the principles and rules.
It is stated that Directive 2001/29 develops those principles and rules and places them in the context of the information society.
By contrasting the formal and the out-of-school experiences, it is possible to unveil and bring to consciousness the principles and rules of the "grammar of schooling".
