Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung cu don snippets" » "nhung cau don snippets", "nhung chu don snippets", "chung cu don snippets", "nhung cu dan snippets", "nhung co don snippets", "nhung cau dong 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: (((("nhung cu don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhung cu don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung cu don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung cu don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.