a portion of poeple vs a large portion of poeple

Some examples from the web:

• We've retrieved a portion of the Klingon officer's journal.
• Okay, but I've already got a portion of the molecular chain...
• They want a portion of our Chumhum fee.
• I give a portion of the Nina.
• She's entitled to a portion of it.
• A portion of the software is delivered by Julian Madsen company.
• There's a portion of tongue, hair and... brain matter.
• Blast from the stove ripped through a portion of the kitchen floor.
• Found a portion of the clavicle.
• Imagine if even a portion of a female unit were pregnant.
• Someone from your family can donate - a portion of their liver.
• I took a portion of her dowry to Mehar.
• A portion of land or water part of a facility destined to functional purposes.
• A portion of my men will remain stationed against further embarrassments.
• He would put a portion of his paycheck in an account every month.
• After I gave the second operates a portion of the building.
• This one's a portion of the sacrum.
• Noneras a portion of protoplasma... or what was.
• Give him a portion of I'argent.
• A portion of the budget is to be used for assessing European employment policy.

Some examples from the web:

• Leaving a large portion of our military's defenses blind.
• A large portion of nitric oxide for inhalation is absorbed systemically.
• A large portion of E-Deck is still decompressed.
• Leaving a large portion of our military's defenses blind.
• Trade determines a large portion of the economic growth of some countries.
• I think, for a large portion of your life, you've been misunderstood.
• Furthermore, definition of eligible capital instruments should not disadvantage certain business models of non-joint stock companies, in particular cooperatives and saving banks, which represent a large portion of European banking industry.
• An object of that size would eliminate a large portion of the West coast of the US if it fell, say, on Arizona.
• The European Union guarantees a large portion of what the EIB lends and its loans in this respect do not carry any risk.
• Moreover, it is regional and local authorities that implement a large portion of EU decisions.
• A large portion of the cuts in CA are linked to the overall approach that the Council took on decentralised agencies (see below).
• And, yes, he really did cough up a large portion of dead lung tissue.
• And it's not even that he ruined a large portion of my childhood.
• Removing it means removing a large portion of his pancreas which would make Henry a diabetic.
• The Committee recognises that employers provide a large portion of training to adults (point 2.2 of the action plan).
• But with proper therapy it's likely you'll recover a large portion of your memories over time.
• As you may as well know, I have a large portion of this school bugged and wiretapped.
• This is a guy who spent a large portion of his life in jail.
• The Structural Funds constitute a large portion of EU funding: - EUR 277 billion were allocated for the 2007-2013 budget.
• We shall show by these hearings that a large portion of the market for this material is with inquisitive and impressionable teenagers.