The phrase "a tiny section of" is correct and usable in written English.
It can be used to describe a small part or portion of something larger, often in a physical or metaphorical context.
Example: "In the vast landscape of the novel, there is a tiny section of the story that focuses on the protagonist's childhood."
Alternatives: "a small part of" or "a minute portion of".
Now a state plan may open up a tiny section of waterfront.
Only a tiny section of the 45-room hotel remained standing, albeit charred and ruined.
In the right panel is a microscopic closeup of a tiny section of his body, a fingernail.
If they join, the NPCS operator will collect the fees, leaving them to collect processing fees only when card-holders travel abroad -- a tiny section of the market.
And at this dinner the centerpieces, such as they were, were small piles of rat bones — a tiny section of rib here, a spine there.
The list amounts to more errors in a tiny section of the game than England would expect to make in 80 minutes.
In a BBC interview she dismissed the booing: "It was a tiny, tiny section of the conference that did a kind of groan at the mention of Tony Blair's name, and I think they were wrong to do that and that was not the view of conference as a whole and people were very aggrieved by the way that that's been presented".
The theory behind all speed-reading techniques involves getting words more efficiently to the fovea, a tiny section at the centre of the retina that gives us the sharp vision we need to accurately identify shapes, including letters.
Earlier states do not have higher entropy than present states because we make the cosmological posit that the universe began in an extremely tiny section of its available phase space.
There's always a battle somewhere, and let me give you just a couple of examples from one tiny section of the coast.
"Everything is about one tiny section of the bill" dealing with the liability of employers.
