Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung qua hon snippets" » "duong qua hon snippets", "dung quan hon snippets", "dung cua hon snippets", "dung qua con snippets", "dung dua hon 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 qua 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: (((("dung qua hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung qua hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung qua hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.