"In the near future, Yandex's search results will display not only Facebook users' posts but also others' comments on them," the search firm said in a statement.
"Users can find out what those on the social network are saying about the current headline news events, for example, or the latest movies."
Yandex said it will take into consideration the popularity of topics on Facebook in ranking search results.
The deal is Facebook's latest initiative to catch up with local Russian social networks, such as Vkontakte, as part of a wider plan to grow its membership in emerging markets.
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Although Facebook will be better represented in Yandex’s search results, the search firm said it plans to create social search services, using content from all the popular social networks in equal measure.
Yandex already partners with other social networks, including Twitter and Vkontakte.
Collaboration not competition
Yandex said this approach is aimed at enabling users to find friends without having to register on every social network.
“We don’t compete with anybody in the sphere of social networks; instead we seek to collaborate with all the players," Yandex said.
The financial terms of the deal have not been disclosed, but reportedly the deal did not involve any cash.