[quote="parsa, post:3, topic:106191"]
How can I have "server" word in results  ,searching "server" word no returns result.
[/quote]

Take a look at [analysis and analyzers](https://www.elastic.co/guide/en/elasticsearch/reference/current/analysis.html), and the [NEST section on writing analyzers](https://www.elastic.co/guide/en/elasticsearch/client/net-api/current/analysis.html).

Configuring analyzers to fit the search problem of your domain is an iterative approach you can take to improve the search experience.

[quote="parsa, post:3, topic:106191"]
And for sorting results what can I do?
[/quote]

Take a look at [sorting](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-sort.html) and the [Sort Usage documentation for NEST](https://www.elastic.co/guide/en/elasticsearch/client/net-api/current/sort-usage.html).

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