Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khen ca cat snippets" » "khien cau cat snippets", "khan cap cat snippets", "when can cat snippets", "khen cay cat snippets", "khen ca cac snippets", "khen ca 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: (((("khen ca cat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khen ca cat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khen ca cat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khen ca cat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.