Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan luan que snippets" » "doanh luan que snippets", "dung luan que snippets", "tang luan que snippets", "dan luan quy snippets", "dan luan quoc snippets", "dan luan rui 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: (((("dan luan que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan luan que snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan luan que snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan luan que snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.