Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong tao va slippers" » "cong tac va slippers", "cong tan va slippers", "cong bao va slippers", "cong tao va slippery", "cong tao va 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 tao va 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 tao va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tao va slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tao va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.