Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huong du con snippets" » "huong tu con snippets", "huong di con snippets", "huong vu con snippets", "huong duc con snippets", "huong dung con snippets", "huong dieu con 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: (((("huong du con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huong du con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huong du con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huong du con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.