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