The phrase "hard knowledge" is correct and it can be used in written English.
Example sentence: He was praised for his hard knowledge of economic theory.
A residual positivism makes fact and intuition seem to be antithetical terms: hard knowledge versus subjective empathy.
McKinsey Solutions marked the first time the consultancy unbundled its offerings and focused so heavily on hard knowledge assets.
The fact that she is right but then succumbs to temptation is part of the hard knowledge that lay at the heart of Milton's notion of freedom.
The meeting of hard rock and hard knowledge is one from which the genre derives a lot of its unique character.
NEW YORK — After the roller-coaster ride of 2016's election night, have journalists and political junkies learned not to let conventional wisdom substitute for hard knowledge?
"In France, we evaluate essentially only hard knowledge, not at all abilities," said Emmanuel Davidenkoff, the editor of the education magazine L'Étudiant.
I work "hard for knowledge and accomplishments".
Trust in your hard work, knowledge, and aptitudes.
The hubristic claim that economists (or experts in some other discipline) have arrived at hard scientific knowledge, capable of successfully guiding development, has led to disaster after disaster.
He had the keenest sense of fundamental football and the greatest intensity of spirit in transmitting his hard earned knowledge.
Paying future attention to the hard won knowledge of specialists may not only help make our lives a little bit sweeter, but may also help to save lives.
