Enter a word or phrase that describes your product or service and click "Submit".
The results show search query statistics for searches on Yandex that include the words or phrases you entered (on the left) and other searches made by those people (on the right).
The figures next to each query in the results are a provisional forecast for the number of impressions a month you'll receive if you use the query as one of your keywords. So the number next to the word "telephone" denotes the number of impressions for all searches containing the word "telephone": "sell telephone", "buy telephone", "second hand telephone", "but a new polkadot telephone" etc.
Click "All regions" to find out how many people from a specific region search for a keyword.