By default, the search engine locates pages which have all of the words you entered. It's not necessary to include the words "delphi" nor "DelphiLand".

You can modify the search behavior in several ways:

• Phrase search
  To match an exact set of keywords (a "phrase"), use quotes around them.
  Example: "memo lines"
  
  
• + search
  If you type a + sign before a word, that word must be on the page.
  By default, common words and characters such as "is", "how", "as",and so on... are ignored. If a common word is essential to your search, you can include it by putting a "+" sign in front of it. (Be sure to include a space before the "+" sign.)
  Example: sender +as
  
  
• - search
  If you type a - sign before a word, that word should not be on the page.
  Example: print -printer
  
  
• Boolean search
  You can use the boolean operators AND and OR. These operators must be in capital letters.
  Example: (print OR Printer) AND paper