The phrase "a vast bit of" is correct and usable in written English.
It can be used to describe a large amount or significant portion of something, often in a more informal context.
Example: "After reviewing the data, I realized that there was a vast bit of information that we had overlooked."
Alternatives: "a considerable amount of" or "a large portion of".
Of necessity these four papers only address a tiny bit of a vast number of aspects that make up the transformation from knowledge and value conduit into designer of learning experiences.
And Jeff Morgan, of the California-based Global Heritage Fund which provides intensive, long-term help at a limited number of sites says UNESCO lacks the resources to monitor its ever-growing list of places, especially if they are vast bits of wilderness.
The entire solar system is now thought to be surrounded by a vast spherical cloud of bits and pieces called the Oort Cloud that may stretch as much as 100,000 times as far from the sun as Earth.
Donald Trump gives his first State of the Union address on Tuesday at 9 p.m. ET, and it comes as the president has a bit of momentum: a vast rewrite of the American tax code and a budget stare-down over immigration where he forced Senate Democrats to surrender on Republican terms.
This vast, gaunt structure is a bit of a disappointment.
The center of Hama was pulverized into a vast field of rubble interspersed with bits of clothing, yet on the fringe of it stood, astonishingly, a tourism office.
Anna lies down in front of it and wriggles a bit, whereupon there is a vast amount of white smoke.
Why, I've wondered in the past, would anyone want to spend a vast sum of money to feel a bit queasy in the middle of the Indian ocean with nothing but a prawn cocktail dinner and a screening of Romancing the Stone to look forward to.
Less than a 30-minute drive from the rowdiness of downtown Miami Beach is a vast region of primeval wilderness that is every bit as raucous.
His plan was for a symbolic overnight stay in a particularly nasty bit of Darfur the vast desert region that has seen perhaps 300,000 people killed and more than 2m displaced in the last three years of fighting there.But on a barge journey up the Nile from Juba, surrounded, he says, by naked Dinka herdsmen, Mr Egeland received a satellite call informing him that he was not welcome in Darfur.
