Try these general databases to get started....
AHU has a highly regarded religion database called ATLA Religion Database that can guide you to peer-reviewed journal articles, essays, and book reviews on theology and religion.
ATLA stands for American Theological Library Association. They maintain the index.
Coverage areas for ATLA RDB include: Bible, archaeology, and antiquities; human culture and society; church history, missions, and ecumenism; pastoral ministry; world religions and religious studies; and theology, philosophy, and ethics.