Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khan ma cao snippets" » "nhan ma cao snippets", "than ma cao snippets", "khan maaz cao snippets", "khan va cao snippets", "khan ca cao snippets", "khan xa cao 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: (((("khan ma 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: (((("khan ma cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khan ma cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khan ma cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.