Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc so hoi snippets" » "duc mo hoi snippets", "duc sy hoi snippets", "duc so hoa snippets", "duc co hoi snippets", "duc so hoc 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: (((("duc so hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc so hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc so hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc so hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.