Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc nhan co snippets" » "luc nhat co snippets", "cu nhan co snippets", "tue nhan co snippets", "luc nhan con snippets", "luc phan co snippets", "luc nhan mo 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: (((("luc nhan 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: (((("luc nhan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc nhan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc nhan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.