Perhaps you should try some spelling variations:
"co hoi chieu snippets" » "co doi chieu snippets", "co ho chieu snippets", "co hai chieu snippets", "co hoc chieu snippets", "co loi chieu 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: (((("co hoi chieu snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("co hoi chieu snippets") OR ("python using sat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( co hoi chieu snippets ) or ( python using sat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co hoi chieu snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))*.