Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xen tung ho snippets" » "xen tong ho snippets", "tien tung ho snippets", "xen muong ho snippets", "xen tuong ho snippets", "xen trung hoc snippets", "xen trung hoa 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 tung ho 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 tung ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xen tung ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xen tung ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.