Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xen hong son snippets" » "xen tong son snippets", "den phong son snippets", "xen muong son snippets", "xen hoang son snippets", "xen dong son snippets", "xen hang son 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 hong son 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 hong son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xen hong son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xen hong son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.