Required terms
Use a plus sign prefix before each required term
- Examples
- +automobile +windshields +glass
- +partially +stabilized +zirconia +ceria
Excluded terms
Use a minus sign prefix before each excluded term
- Examples
- +rotary +kilns –cement
- +stabilized +zirconia –yttria
Wildcards
Use an asterisk anywhere after the first letter in the term
- Example
- refractor* will return results for refractories, refractory, refractoriness
Exact phrases
Enclose in double quotes
- Example
- "basic refractories"
Example searches
- +"thermal barrier coatings" +zirconia
- +"blast furnace" +refractor*
- +monolithic +refractor* +steel
