Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang cua lon snippets" » "mang cua lon snippets", "hang ca lon snippets", "huong cua lon snippets", "hang cua con snippets", "hang cua hon snippets", "hang cua loc 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: (((("hang cua lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang cua lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang cua lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang cua lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.