Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung lam so snippets" » "dung luan so snippets", "dung tai so snippets", "dung dat so snippets", "dung lam son snippets", "dung nam so snippets", "dung ham so 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: (((("dung lam so snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung lam so snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lam so snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lam so snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.