Use more than one word:
Search for subjects and concepts instead of just keywords (be sure to use more than one word when you search).

Be specific:
Use specific subjects as opposed to general ones. For example, a search for "Uzbekistan" will return more targeted results than a search for "Business in Uzbekistan."

Don't enter site name:
In the search engine, there is no specific site included, you can find only subject which is related to the country.