Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"co mach hoc snippets" » "co cach hoc snippets", "co dich hoc snippets", "co anh hoc snippets", "co sach hoc snippets", "co trach hoc 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: (((("co mach hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co mach hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co mach hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co mach hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.