Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ket van so snippets" » "ket va so snippets", "viet van so snippets", "ket doan so snippets", "ket van son snippets", "ket van soa snippets", "ket van su 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 van so 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 van so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ket van so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ket van so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.