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Advanced Searching

The Advanced Search screen lets you construct more complex search statements. Each search string entered in a Search for: box uses a single index. Up to three search strings in three indexes can be combined using Boolean operators (AND, OR, and NOT).

To find information about pollution AND (car OR truck), type the search terms enclosed in parentheses in the second Search for: box. You can also enter the entire search string into the first Search for: box.

	Explanation
1	Choose a database to search in. Options: TRIS Online NTL Catalog NTL Digital Repository Other Transportation Web Sites Search All – includes all of the above databases
2	Type one or more key search terms into the first Search for: box. Phrases should be enclosed in quotes.
3	Indexes are displayed in the box to the right of your search term. Click the drop-down list box to see all available indexes. Then, select the index in which you expect to find these terms. Note:For more information on indexes, see 'Command Search /Search Indexes' below.
4	Type search terms in the second and third Search for: box as needed.
5	Choose the indexes for the second and third search strings.
6	Some indexes have lookup options (small magnifying glass to the right of index) to choose the correct term.
7	Select Boolean operators (AND, OR, and NOT) to combine the search strings entered in the second or third boxes.
8	Select limits if you want to narrow your search. In an advanced search, you can limit by Year. Other available limits vary by database. Year format = yyyy (for a year range use yyyy-yyyy) For more information on limits, see 'Limits' below.
9	If you'd like to sort your results, choose an option from the Sort by: drop-down menu.

10	Click the Search button.
11	Review the list of search results and refine the search as needed.

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