Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi han hoc snippets" » "hoi phan hoc snippets", "hoi dan hoc snippets", "hoa han hoc snippets", "hoi nhan hoc snippets", "hoi than hoc snippets", "hoi van 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: (((("hoi han 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: (((("hoi han hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi han hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi han hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.