Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co cao code snippets" » "co cao cong snippets", "co cao de snippets", "co cfd code snippets", "cho cao code snippets", "cu cao code snippets", "co cau code snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"co cao code snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( co cao code snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("co cao code snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.