Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam tra chat snippets" » "dam tran chau snippets", "dam tran nhat snippets", "dam hoa chat snippets", "dam trao chat snippets", "dan tra chat snippets", "nam tra 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: (((("dam tra chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dam tra chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam tra chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam tra chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.