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