Grammar
넓게 찾다
search more widely
Form
Adjective 넓다 → adverb 넓게 + verb 찾다 — “search more widely”.
Function
The -게 adverb specifies the breadth of the search; the combination is not a single grammatical ending.
Why this form?
샅샅이 찾다 — search thoroughly: stresses exhaustiveness rather than simply a wider area.
Forms not to confuse
샅샅이 찾다
방을 샅샅이 찾았어요. — I searched the room thoroughly.
Examples
더 넓게 찾으려면 나눠서 움직이죠. — To search more widely, let us split up.
범위를 넓게 잡아야 해요. — We should set a broad scope.