Your sentence is incomplete, but it looks like the start of an academic statement. Here are a few correct ways to finish it depending on the topic:
π General completion
- βIn recent years, intensive research has been conducted in various fields to improve understanding of complex phenomena.β
𧬠Science/medicine
- βIn recent years, intensive research has been conducted to develop new treatments and improve disease prevention.β
π» Technology/AI
- βIn recent years, intensive research has been focused on artificial intelligence, machine learning, and data-driven systems.β
π Environment
- βIn recent years, intensive research has been carried out on climate change and sustainable energy solutions.β
If you tell me the subject (biology, education, environment, etc.), I can complete it exactly for your essay or exam answer.