Topic 2 Possibilities and principles of operation of search systems

What is a search engine?

A search engine is a software program that helps people find the information they are looking for online using keywords or phrases.

Search engines are able to return results quickly—even with millions of websites online—by scanning the Internet continuously and indexing every page they find. When a user enters a search term, the search engine looks at the website page titles, contents and keywords it has indexed and uses algorithms (step-by-step operations) to produce a list of sites—with the most relevant websites at the top of the list.

Companies use search engine optimization (SEO) to help search engines recognize their websites as highly relevant to particular searches.

Some popular search engines are: Google, Bing, Yahoo, DuckDuckGo

Search engines are pretty good at finding what you’re looking for these days, but sometimes they still come up short. For those occasions there are a few little known tricks which come in handy.

1.Exact phrase

2.Exclude terms

3.Either OR

4.Synonym search

5.Search within a site

6.The power of the asterisk

7.Searching between two values

8.Search for word in the body, title or URL of a page

9.Search for related sites

10.Combine them