Your statement indicates your lack of understanding regarding scientists who are also theists/Christians. These scientists believe there is much to be discovered in God's creation. How life works is a big question. But they are guided, as are secular scientists, with certain presuppositions. One of those is that the universe is ordered, consistent, and comprehensible...because a personal Creator created it. And because it is ordered, it can be studied, and figured out.
This doesn't mean that the sole source of knowledge is the Bible...but that the Bible informs us as the the "whys" and "wherefores" of creation.
the basic problem as you state it is not with the search for truth and facts but that there is no real definition of what a scientist is.