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