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Entering a single word will search for that complete word e.g.

    electron

Entering multiple words that do not contain special operators will search for that complete phrase e.g.

    electron microscope

Entering a phrase surrounded by quotes will search for that complete phrase .e.g

    "electron microscope"

  This can be useful when combined with operators.

The upper-case operators AND, OR and AND NOT may be used e.g

    "electron microscope" AND NOT transmission
    electron AND microscope
    electron OR microscope

    You must use upper-case for these operators.

You can search for words that are near to other words e.g.

    electron NEAR microscope

  Words are considered NEAR if they are within 50 words of each other

Partial words can be used ending with an asterisk e.g.

    microsco*

 or

    electro* AND microscop*

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