Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duy mat can snippets" » "duy vat can snippets", "duy mai can snippets", "dung mat can snippets", "duy bat can snippets", "duy mat dan snippets", "duy mao can 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: (((("duy mat can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duy mat can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duy mat can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duy mat can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.