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