Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc lai trac slippers" » "duc hai trac slippers", "duc li trac slippers", "duc hoi trac slippers", "duc dai trac slippers", "duc loi trac slippers", "duc lai trac slippery", "duc lai trac 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 lai trac 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 lai trac slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc lai trac slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc lai trac slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.