Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mach cho can snippets" » "mach cao can snippets", "danh cho can snippets", "dac cho can snippets", "mach cho cac snippets", "mach cho phan snippets", "mach cho cong 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 cho can 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 cho can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mach cho can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mach cho can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.