Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong ly chon snippets" » "cong ty chon snippets", "cong li chon snippets", "cong my chon snippets", "cong ly chan snippets", "cong ly cho snippets", "cong lay chong 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 ly chon 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 ly chon snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong ly chon snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong ly chon snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.