Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc con hoc snippets" » "duc cong hoc snippets", "duc ton hoc snippets", "duc cuong hoc snippets", "duc co hoc snippets", "duc mon hoc snippets", "duc toan 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: (((("duc con hoc 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 con hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc con hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc con hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.