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Web searching for words such as air velocity instruments is becoming an indispensable part of the daily life of many groups of people. Web usage is not limited to a few specific purposes and its functionalities are spreading across different aspects of life. Among all web-based applications, Web searching is one of the most common and important ones. However, satisfying the information needs on the Web is not always an easy and straightforward process. Web searching might be very time-consuming and may culminate in unsatisfactory results as well.
