Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan cao hon snippets" » "dan ca hon snippets", "dam cao hon snippets", "dan bao hon snippets", "dan cao son snippets", "dan cao hoc 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: (((("dan cao hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan cao hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan cao hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cao hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.