Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ket dan soc snippets" » "ket doan soc snippets", "ke dan soc snippets", "ket van soc snippets", "ket dan toc snippets", "ket dan hoc snippets", "ket dan so 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: (((("ket dan soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ket dan soc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ket dan soc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ket dan soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.