Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tich van don snippets" » "tich va don snippets", "trinh van don snippets", "dinh van don snippets", "tich van dong snippets", "tich van doan snippets", "tich van dan 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: (((("tich van 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: (((("tich van don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tich van don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tich van don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.