Perhaps you should try some spelling variations:
"multi accident research : july 2006" » "multi current research : july 2006", "multi recent research : july 2006", "multi vaccine research : july 2006", "multi client research : july 2006", "multi accident research : july 2008", "multi accident research : july 2007", "multi accident research : july 2013"
"i options research : july 2009" » "i actions research : july 2009", "i optics research : july 2009", "i operations research : july 2009", "4 options research : july 2009", "2 options research : july 2009", "iii options research : july 2009", "i options research : july 2008", "i options research : july 2007", "i options research : july 2019"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("multi accident research : july 2006") or ("i options research : july 2009"))~.
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• Adding a wildcard symbol may retrieve word variants: (("multi accident research : july 2006") or ("i options research : july 2009"))*.