First attempts to create search engines supporting natural language search date back to the 90th. In 1993 the START Natural Language Question Answering System
was developed. It allowed users to search an encyclopedia using natural language search queries.
In 1996 Ask Jeeves
was launched. It was an NLP search engine that made it possible for users to get answers to their questions in conversational language. The logic behind these two projects was rather straightforward: at that time, it was considered that computers need to be adapted to human behavior.
But soon, Google launched a keyword search engine which left competitors far behind thanks to the high relevance of search results. With the growing popularity of the Google search engine, people became more accustomed to keyword search. And soon the issue of adapting computers to human behavior was off the agenda because it was people who adapted to the computers. So, the users have formed a certain behavior pattern to search with the keywords and continue to follow this pattern until now, when shopping online.