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