Perhaps you should try some spelling variations:
"phi hat dan snippets" » "phi hat van snippets", "phi mat dan snippets", "phi nhat danh snippets", "phi hoat dan snippets", "phi vat dan snippets", "phi ha dan snippets", "phi hat 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 ("phi hat 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 ("phi hat dan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using a snippets ) or ( phi hat dan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") or ("phi hat dan snippets"))) or ("locating bug code snippets"))*.