Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach hoi don snippets" » "sach doi don snippets", "sach moi don snippets", "cach thoi don snippets", "sach hoi dong snippets", "sach hoi dan snippets", "sach hoi doi 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: (((("sach hoi don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach hoi don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach hoi don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach hoi don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.