This is a simple word search.  It will return records that contain ALL the words entered. 

• The ordering of the words is unimportant. e.g. a search on weeds aquatic will return records that contain the words weeds and aquatic anywhere in the search column.
• You can use * to find partial words, e.g. weed* matches both weed and weeds
• Special characters often used in search engines are ignored. These include  #, ", ', ~, +, - and !.

All content * Author only Title only      

* 'All content' will search the full text of the bibliography and any associated notes.