Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat chat cao snippets" » "vat chat cao snippets", "sat chat cao snippets", "hoat chat cao snippets", "mat chat co snippets", "mat chat cho snippets", "mat chat bao 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: (((("mat chat cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat chat cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat chat cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat chat cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.