Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam tra cho snippets" » "dam trao cho snippets", "dan tra cho snippets", "nam tra cho snippets", "dam trang cho snippets", "dam tra chat snippets", "dam toan cho 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 cho 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 cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam tra cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam tra cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.