Perhaps you should try some spelling variations:
"than duoc dan snippets" » "than doc dan snippets", "tan duoc dan snippets", "nhan duoc dan snippets", "than duc dan snippets", "than duoc ban snippets", "than duoc dai snippets", "than duoc dan 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: (((("python using a snippets") or ("than duoc dan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using a snippets") OR ("than duoc dan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( than duoc dan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("than duoc dan snippets"))) or ("locating bug code snippets"))*.