Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach ke cho snippets" » "sach kem cho snippets", "sach de cho snippets", "sach che cho snippets", "sach keo cho snippets", "sach ke che snippets", "sach ke co 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 ke cho 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 ke cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach ke cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach ke cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.