Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co cua code snippets" » "co cua cong snippets", "co cua co snippets", "co bug code snippets", "con cua code snippets", "ca cua code snippets", "cong cua 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 cua code snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( co cua code snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("co cua code snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.