SEARCH DEVICE, SEARCH METHOD, SEARCH PROGRAM, AND COMPUTER-READABLE MEMORY MEDIUM FOR RECORDING SEARCH PROGRAM

A search server includes an extracting unit that extracts a search target matching a search condition based on profile data, and a transmitting unit that transmits the search target to a user terminal. The search condition includes a first frequency of appearance for each of one or more specified topics specified by a user in a first specified period and a second frequency of appearance for each of the specified topics in a second specified period being later than the first specified period. The extracting unit extracts the search target where the frequency of appearance for each of the specified topics in a first search target period and a second search target period being later than the first search target period are identical or similar to the first frequency of appearance and the second frequency of appearance, respectively.