Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan tot can snippets" » "luan ket can snippets", "luan thi can snippets", "luan von can snippets", "luan tot san snippets", "luan trot cay snippets", "luan toan can 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: (((("luan tot can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan tot can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan tot can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan tot can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.