Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xen luat cac snippets" » "xen quat cac snippets", "hien luat cac snippets", "ten lua cac snippets", "xen luat can snippets", "xen luat cau snippets", "xen xuat cac 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 luat cac 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 luat cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xen luat cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xen luat cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.