Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach nang co snippets" » "cach mang co snippets", "sach dung co snippets", "sach danh co snippets", "sach nang cao snippets", "sach nang doc snippets", "sach nang 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: (((("sach nang co 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 nang co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach nang co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach nang co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.