Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong du ki slippers" » "cong dau ki slippers", "cong duc ki slippers", "cong duy ki slippers", "cong du ky slippers", "cong du ki slippery", "cong du ki grippers"
"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: (((("cong du ki slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong du ki slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong du ki slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong du ki slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.