Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duy doc so snippets" » "day doc so snippets", "duy dac so snippets", "duy dot so snippets", "duy duc so snippets", "duy hoc 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: (((("duy doc 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: (((("duy doc so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duy doc so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duy doc so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.