The phrase 'make an increase' is correct and usable in written English.
You can use it when discussing an increase in something that requires action to make it happen. For example: To improve its profits, the company should make an increase in its advertising budget.
Governments of developing countries make an increase in living standards a primary goal of national policy.
The only thing bold about it are accounting tactics worthy of Enron that are designed to make an increase in emissions look like a decrease.
For the control of an epidemic, the public health management are advised to make an increase in the duration as regards the loss of immunity.
Some special means taken in DPR design make an increase of the burn-up level of spent fuel and a decrease of fuel cost.
We predict that social foraging occurs in both sexes of narrow-winged open aerial foraging bats that live in social groups year-round and feed on an ephemeral diet and/or have a sufficiently short foraging period to make an increase in foraging efficiency through information transfer useful.
Another possibility is that if the relationship between FTO sequence variation and diabetes is at least partially mediated by BMI, the nominally significant p-value found for the association of rs1421085 with obesity and the absence of association for the remaining variants in African-Americans may make an increase in diabetes susceptibility more difficult to detect.
The government of Nepal has to make an increased commitment to transparency.
United are set to make an increased bid of £30m for the Southampton left-back Luke Shaw.
Robert Tchenguiz, the Iranian property tycoon, is poised to make an increased offer for Selfridges, the upmarket retailer.
Stressing the importance of the strategic partnership between the two nations, Abbott also expressed support for Japan's determination to make an increased contribution to international peace and security.
In order to make the system more demand led, employers were expected to make an increased contribution to the overall costs of apprenticeship training.
