Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach cua cu snippets" » "manh cua cu snippets", "cach cua cu snippets", "sach cua cu snippets", "mach cua chu snippets", "mach cua su snippets", "mach cua co 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 cua cu 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 cua cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mach cua cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mach cua cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.