Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung duy so snippets" » "dung du so snippets", "dung quy so snippets", "tung duy so snippets", "dung duy son snippets", "dung duc so snippets", "dung duy ro 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 duy so 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 duy so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung duy so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung duy so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.