phrasal
1. : to inspect closely : examine carefully : investigate
look into the trade and investment opportunities — advt
look into the population problem — A.L.Guérard
decided to look into his background — Frank O'Leary
2. : to consult (as a book) in a rapid or cursory manner
looked into the chronicles of the middle ages — T.B.Macaulay
have just looked into the … essay — O.W.Holmes †1935