Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat le doan snippets" » "luat ve doan snippets", "luat ke doan snippets", "luat de doan snippets", "luat le dan snippets", "luat ly doanh snippets", "luat le hoang 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: (((("luat le doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luat le doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat le doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat le doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.