Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong dan lua slippers" » "cong san lua slippers", "cong tan lua slippers", "huong dan lua slippers", "cong dan luan slippers", "cong dan luat slippers", "cong dan cua slippers", "cong dan lua slippery", "cong dan lua 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 dan lua 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 dan lua slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong dan lua slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong dan lua slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.