"various principles" is a correct and usable phrase in written English.
You can use it when discussing a range of principles, ideas, theories, etc. For example, "The article discussed various principles of economic theory."
One alleged weakness of pluralistic theories like those of W.D. Ross or the principlism of Beauchamp and Childress is that the various principles that constitute the backbone of such theories can and often do conflict with one another; and when they do, we may need to ascend to a higher level of justification provided by a more comprehensive moral theory.
They prevent or reduce infections by utilizing various principles of disease control.
The universe is the result of the combinations and permutations of these various principles, to which the purusha is added.
Mr. Kudrin's organization, the Committee of Civil Initiatives, released a statement saying the new law "grossly violates various principles of a legal state".
But first we should decide on various principles of child rearing, one being whether or not we think incentives and disincentives are legitimate tools in the bringing up of children at all.
Notwithstanding these deep problems, virtually all normal mathematical argumentation is carried out in logical terms mostly in first-order terms, but with a generous sprinkling of second-order reasoning and various principles of set theory.
This can be achieved by means of various formal principles, e.g., a strong comprehension principle (as in Zalta 1988) or axioms ensuring very finely-individuated properties (as in Bealer 1982, 65, or Menzel 1986, 38)(see §8).
It was an instant success, as was the learning of various mathematical principles through other games.
Princeton Review's most popular online course, for $400, includes interactive multimedia lessons, with audio explanations of various academic principles.
He said there was a Chinese draft that condensed various suggested principles put forward by the other parties to the talks, which include Russia, Japan and South Korea.
They were identified with parts of God's body, regions of the universe, various ontological principles, organs of sense and action, and the elements.
