Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh am cat snippets" » "danh nam cat snippets", "danh bat cat snippets", "danh dau cat snippets", "danh am ca snippets", "danh dam chat snippets", "danh lam chat 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 am cat 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 am cat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh am cat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh am cat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.