Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao nu doc snippets" » "cao su doc snippets", "cac nu doc snippets", "cao tu doc snippets", "cao n1 doc snippets", "cao n2 doc snippets", "cao n3 doc 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: (((("cao nu doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao nu doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao nu doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao nu doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.