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