Perhaps you should try some spelling variations:
"doanh cao son snippets" » "doanh co son snippets", "doanh bao son snippets", "doanh cho son snippets", "doanh cao cong snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw 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: (((("doanh cao son snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doanh cao son snippets") OR ("python using sat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh cao son snippets ) or ( python using sat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh cao son snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))*.