Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach di cua snippets" » "mach vi cua snippets", "mach dien cua snippets", "mach dieu cua snippets", "mach dai cua snippets", "mach doi cua snippets", "mach de cua 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: (((("mach di cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mach di cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mach di cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mach di cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.