Perhaps you should try some spelling variations:
"python using code snippets" » "python using cfd snippets", "python using one snippets", "python using code slippers"
"doi voi nhat snippets" » "doi moi nhat snippets", "doi hoi nhap snippets", "doi do nhat snippets", "doi voi nhat slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("python using code snippets") or ("doi voi nhat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using code snippets") OR ("doi voi nhat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using code snippets ) or ( doi voi nhat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using code snippets") or ("doi voi nhat snippets"))) or ("locating bug code snippets"))*.