"making sustained efforts" is a correct and usable phrase in written English.
It is typically used to describe someone's persistence and determination in achieving a goal or completing a task. Here is an example: Despite facing numerous setbacks, John continued to make sustained efforts towards completing his degree.
"The authorities must prove that these are more than cosmetic changes by making sustained efforts to implement changes and challenge deeply entrenched attitudes prevalent in Egyptian society".
We're taking on questions like this with a strategic, evidence-based approach, making sustained efforts across all of our programs to track our larger impact through data, apply that data in formulating new solutions, and share our impact in powerful, meaningful ways.
The field of gene therapy is making sustained efforts to design better strategies for efficient, safe and cost-effective gene delivery, to identify new molecular targets for improved antiviral effect, and to move toward clinical trials that test the safety and feasibility of these approaches (discussed in [ 13, 19]).
PwC insisted that Alteri had made "sustained efforts" to rescue Brantano.
The rates for Rhode Island, Wisconsin and Iowa, which have made sustained efforts to expand coverage, were similar to the figure in Minnesota.
Extremist clerics have made sustained efforts to find theological justification for such casualties in recent decades and, though such arguments are contested by mainstream scholars, they are preached in hardline mosques and taught in many religious schools in Pakistan.
Trust also made sustained efforts to improve the quality of service in both government and private hospitals with varying success.
Every day, analytical and bio-analytical chemists make sustained efforts to improve the sensitivity, specificity, robustness, and reproducibility of their methods.
Practitioners and mental health services must make sustained efforts to to improve the accessibility of services, and knowledge about services in communities.
They are problems for whole communities to solve, he said, and it will take sustained effort to make a difference.
None made any sustained efforts to deal with the Roma problem.
