Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach nam lo snippets" » "sach nay lo snippets", "sach tham lo snippets", "sach nang lo snippets", "sach nam bo snippets", "sach nam so snippets", "sach nam 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 nam lo 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 nam lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach nam lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach nam lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.