Perhaps you should try some spelling variations:
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets"
"doi vien da snippets" » "doi dien da snippets", "doi viet da snippets", "hoi vien da snippets", "doi vien dai snippets", "doi hien dai 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: (((("doi vien da snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi vien da snippets") OR ("python using sat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi vien da snippets ) or ( python using sat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi vien da snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))*.