Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua le doan snippets" » "qua le dan snippets", "qua ly doanh snippets", "qua le hoang snippets", "cua le doan snippets", "qua la doan snippets", "quang le doan 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: (((("qua 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: (((("qua le doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua le doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua le doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.