Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach hoi toc snippets" » "sach doi toc snippets", "sach moi toc snippets", "cach thoi toc snippets", "sach hoi hoc snippets", "sach ho toc snippets", "sach hoa toc 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 toc 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 toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach hoi toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach hoi toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.