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