Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh co ma slippers" » "danh cho ma slippers", "doanh co ma slippers", "anh co ma slippers", "danh co ma slippery", "danh co ma 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: (((("danh co ma slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh co ma slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh co ma slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh co ma slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.