Perhaps you should try some spelling variations:
"dung cong java snippets" » "dung trong java snippets", "dung cong va snippets", "dung chong java snippets", "dung cuang java snippets", "dung vonng java snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung co code snippets" » "dung cho code snippets", "dung cua code snippets", "dung von code snippets", "dung cfd code snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung cong java snippets") or ("dung co code snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cong java snippets") OR ("dung co code snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung cong java snippets ) or ( dung co code snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cong java snippets") or ("dung co code snippets"))) or ("locating bug core snippets"))*.