When we use and, the terms in the joined document can occur in any part of the same. However, being about a great document, many words will be able to generate some inconveniences that really are not object of the document. To have certainty that the terms typed for the research will be next one to the other, we can use operator NEAR, whose tolerance varies very enters the search systems. Example: Cachorros to near Linux Cats to near Windows Truncation the truncation is, basically, the reduction of the extension of a word, whose the result can or not coincide with the desired intention. We can define the Truncation in two distinct types: opened (it is possible to substitute some characters and to recoup documents that brings terms with the same semantics) and closed (an only character is substituted). Example of the open type: Music* In the case above, the located truncation the right, will be recouped: Musician, Music, Musical comedy, Amateur musician, Musicalidade etc. In case that the truncation were located to the left, as in *metria, the system will go to recoup: Symmetry, Audiometria, Trigonometry etc.
Example of the closed type: Planning (Brazilian form) and Planning (Portuguese form) to have the certainty to recoup all the documents that will count this context in the Brazilian or Portuguese form, become a closed truncation: it glides? amento, normally, designating the gap by means of a interrogation point. Main Advanced Methods of Research Searches Related In both the sites of search studied here, when using the operator related, the search will return similar pages that are related or the one that we are searching. Example: related: google.com related: football Documents After Specific Date Ask.com offers an interesting resource very. In case that let us intend to search for documents published after the specific date that let us type, we use the prefix afterdate: Example: Judo afterdate: 20100110 In the example above, Ask.com will go in them to return all after the documents published on jud it dates 10 of January of 2010.