"improved opportunity" is correct and usable in written English.
You can use it when there is an opportunity to make an improvement in some area. For example, "We have an improved opportunity this year to promote environmental sustainability."
The number that best illustrates Democrats' improved opportunity for winning the White House has been the declining proportion of whites within the national electorate.
The view from the publisher side is that real-time bidding has not had the impact of reducing the CPM they are seeing through their display sales channels, as Jon Myers, of Yahoo explains: "For Yahoo, real Time Bidding (RTB) has meant improved opportunity and yields.
Other advantages of resource leveling include simplified resource tracking and control, lower cost of resource management and improved opportunity for learning.
Over a lifetime of leadership, Senator Kennedy's statesmanship and political prowess produced a wealth of accomplishment that has improved opportunity for every American.
The results for both objectives provide improved opportunities to learn about low-energy designs.
Improved opportunities for effective placement of graduates through better mutual knowledge of personnel and facilities.
Reducing the burden on Americans in financial trouble would mean more jobs and improved opportunities for everyone.
New advances in information technology provide improved opportunities for continuing education for nurses particularly via the web [ 6].
It is clear that medical cadres have very specific requirements: better financial incentives, improved opportunities for career development/education and improved management/communication.
That growth could in turn generate trillions more in returns while improving opportunity and quality of life.
A huge part of the president's strategy is a growth strategy, designed to improve opportunity by making sure Americans can take advantage of better educational training opportunities.
