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