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