Search by author - use variants
Author search is usually [author:Lastname] Sometimes you will need to add a first initial, and if you do you should use quotation marks. Also, you should try variant spellings.
For example: To find works by Antonio Damasio, you should try
Exclude terms from your search
Put the minus symbol ("-") before 1st letter to exclude a word.
For example, [flowers -author:flowers] returns papers about flowers, and ignores papers written by people with the name Flowers