Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nho hoi den snippets" » "nho toi den snippets", "ngoc hoi den snippets", "khoa hoi den snippets", "nho hoi dien snippets", "nho hoi dan snippets", "nho moi den 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: (((("nho hoi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nho hoi den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nho hoi den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nho hoi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.