Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang va toan snippets" » "nang van toan snippets", "hang va toan snippets", "nang ma toan snippets", "nang bai toan snippets", "nang tap toan 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: (((("nang va toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang va toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang va toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang va toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.