The phrase 'heavily increase' is correct and usable in written English.
You could use it when discussing a situation where something has drastically increased or intensified. For example, "The company has seen a heavily increase in sales over the last year".
Startups apply to enter a programme, receive investment, mentoring and all sorts of connections that will heavily increase their chances of success.
The prime brokers that provide credit liquidity to these funds are beginning to withdraw financial support or heavily increase their margin calls, the report said.
Mr. Handal promised to bring the 380-troop Salvadoran contingent home from Iraq, restore diplomatic relations with Cuba, tax the rich more heavily, increase government spending for the poor and still seek good relations with the United States.
Britain must heavily increase spending on defence research otherwise national security will be breached and troops killed by technologically advanced opponents, former ministers, soldiers and contractors have told The Independent on Sunday.
Partners provide delivery details either via spreadshseet, API, or web forms ahead of time, enabling Rickshaw to and route intelligently and heavily increase the number of deliveries that can be made per hour.
Chandler, whose role has heavily increased under D'Antoni, took advantage of the opportunity, scoring 22 points.
Among them are increased pay for the families of the dead, rebuilding the city's office of emergency management -- for $150 million -- and heavily increased security around the city.
A woman who began drinking heavily increased the heavy-drinking risk of those around her, whereas heavy-drinking men had less effect on other people.
The risk of collision was heavily increased when Clare Short was made head of the Department for International Development, as the aid ministry is now called, and given a cabinet post.
There she won a fine silver medal, British judo's first Olympic decoration since 2000, in a division that Gibbons has only just joined, and for which she has heavily increased her calorie intake.
And the best way to do this is to borrow more heavily, increasing leverage and reducing equity funding relative to their balance sheets (an equivalent way of saying that they borrow more and rely less on equity — in banking jargon, they reduce their capital levels).
