Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh cho cao snippets" » "danh cho cac snippets", "danh cho dao snippets", "danh cho can snippets", "doanh cho cao snippets", "dan cho cao snippets", "dinh cho cao 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: (((("danh cho cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh cho cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh cho cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cho cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.