The phrase "a string of phrases" is correct and usable in written English.
It can be used to describe a sequence or collection of phrases that are connected or related in some way.
Example: "The author crafted a string of phrases that beautifully captured the essence of the moment."
Alternatives: "a series of phrases" or "a collection of phrases".
He huffed a string of phrases, hinting at the blues, and then went mystical, using circular breathing to maintain a hornet's-nest hum.
This document would be more convincing as a call to arms if it did not read like a string of phrases chosen for their popularity with focus-groups and then crammed into one sentence after another.
But it was only the latest in a string of phrases, from "smoke them out of their caves" to "the evil one," that have punctuated Mr. Bush's speech and are destined to live on as signposts of his presidency.
The peace resolution was a string of innocuous phrases expressing Germany's desire for peace but without a clear renunciation of annexations or indemnities.
Some episodes of "How I Met Your Mother" in particular come across as a string of catch phrases, mini-sketches and outbursts intended to be replicated ad nauseam online.
If you thrust a microphone in the face of a person on the street and ask for a statement about a situation you will probably get back a string of familiar phrases.
My cooking, my thinking, even my writing: I've resolved never to just throw a string of popular phrases that weren't my own — "life hack" or "double down" — onto the plate of my own essay and dare to call it writing.
If confronted by protesters, be ready with a string of villainous phrases like "the establishment," "Thatcher," "tax dodgers" and "Bush". This should confuse them and buy you precious seconds to flee.
Replace "to be" (is, was, were) verbs followed by a string of prepositional phrases with colorful, active verbs.
Fleming sings the aria as a string of immaculate, silvery phrases — it's come-over-here, you-have-to-see-this beautiful.
Although Mr. Taylor, an author of books that compete with the Harry Potter series, indeed said Harry was "not the only gay in the village," he and the head teacher agree that he was ejected for using a string of vulgar words and phrases.
