Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong lap dong snippets" » "cong luan dong snippets", "cong lang dong snippets", "cong tac dong snippets", "cong lao dong snippets", "cong lam dong snippets", "cong lai dong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("cong lap dong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong lap dong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong lap dong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong lap dong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.