Perhaps you should try some spelling variations:
"tien cong dat snippets" » "thien cong dat snippets", "trien cong dat snippets", "tien luong dat snippets", "tien dong dat snippets", "tien cong dan snippets", "tien cong da snippets", "tien cong dat slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("tien cong dat snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tien cong dat snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tien cong dat snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tien cong dat snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.