"narrow constraints" is correct and usable in written English.
You can use it when referring to limitations or restrictions that are strict in nature. For example, "The narrow constraints of the government's policy made it difficult for citizens to find a solution."
Until 2011 the Tunisian media operated under narrow constraints.
Although there is plenty of rubble in "Detroit Disassembled," Mr. Moore's work usually escapes the narrow constraints of the genre.
In Haiti, the United States restored President Aristide to power in 1994, but placed narrow constraints on the exercise of his power.
Their conversations, his extraordinary paintings, break open the narrow constraints of her existence, connecting her with the bold, eager girl she used to be, the dreams she long ago folded up and put away.
Daniels has chosen his title well: with every word he writes, Cardus evades the narrow constraints of criticism to celebrate life, language, art, beauty - and the miracle of personality.
But it's a sign of the narrow constraints or limits of Edwards's artistry, or of the script that he was handed, that the scenes in which such unpleasantness occurs have all the emotional impact of a checklist or a call sheet that simply says whether an actor will or won't be needed the next day.
Anderson's story of the era's struggle against narrow-minded constraints of morality and bureaucracy has a paradoxical, terrifying, apocalyptic, yet exuberant energy.
In contrast, the cavities and crevices between layers of rocky substrate, into which Tropheus delve to avoid predation, provide shelter to cichlid species both considerably larger and smaller than Tropheus and are unlikely to enforce a narrow constraint on body size.
And they are much more resource oriented than governments that tend to make their decisions easier with narrower constraints.
As longevity increases, I'd like to see the lives of healthy older adults continually enhanced through innovation and entrepreneurship going beyond the too-narrow constraints of the current emphasis on pathology.
Trying to encourage him to be unpredictable, that is, but just a little -- enough to keep things lively, but not enough to overwhelm the narrow stylistic constraints of a late-night talk show, which can be one of the most deeply predictable formulas on the air.
