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