Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"juan luu dan snippets" » "juan liu dan snippets", "juan luis dan snippets", "dan luu dan snippets", "juan luu van snippets", "juan luu hanh snippets", "juan luat dan snippets", "juan luu dan 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: (((("juan luu dan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("juan luu dan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( juan luu dan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("juan luu dan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.