Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoan cua de snippets" » "hoa cua de snippets", "toan cua de snippets", "han cua de snippets", "hoan cua te snippets", "hoan cua du snippets", "hoan cua he 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: (((("hoan cua de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoan cua de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoan cua de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoan cua de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.