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