Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"using raw chat snippets" » "using real chat snippets", "using a chat snippets", "using low chat snippets", "using cao chat snippets", "using van chat snippets", "using tao chat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: "((((\"dung java java snippets\") OR (\"using raw chat snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java snippets ) OR ( using raw chat snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") OR ("using raw chat snippets"))) OR ("locating bug code snippets"))*.