Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan nghe de snippets" » "nganh nghe de snippets", "van nghe de snippets", "nang nghe de snippets", "nhan nghe det snippets", "nhan nghe di snippets", "nhan nghe te 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: (((("nhan nghe de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan nghe de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan nghe de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan nghe de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.