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