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To search, select a site(s). (All of OAR is the default.) Then enter a single word, several words or a phrase below. The search locates documents containing any one of the words entered. Use AND or "quoted phrase" to search for multiple words.

    
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Items not separated by commas will be searched as exact phrases. Emission reduction will find emissions reductions, emissions reduction, etc.
Each word and words within phrases will be "stemmed" to retrieve different tenses, plurals etc. truck = truck, trucks, trucking, trucked
For an exact match, enclose terms or phrases in quotes. "emission traders"
Asterisks (*) substitute for a string of characters of any length. pollu* = pollution, polluter, polluters, polluting

Question marks (?) substitute for a single character

ai? = air, aim, ail, etc.
Do not use plus or minus. Use "and" or "but not". No + or - in search field

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