Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach mau cao snippets" » "sach dau cao snippets", "sach dao cao snippets", "bach mai cao snippets", "sach mau cau snippets", "sach mau co snippets", "sach mau nao 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 mau cao 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 mau cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach mau cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach mau cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.