Perhaps you should try some spelling variations:
"tien dung dat snippets" » "tin dung dat snippets", "tieu dung dat snippets", "tien luong dat snippets", "tien dung va snippets", "tien dung tai snippets", "tien dung 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 dung 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 dung dat snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tien dung dat snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tien dung dat snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.