Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran tuan ao snippets" » "tran xuan ao snippets", "tran quang ao snippets", "tran thanh ao snippets", "tran quan ao snippets", "tran tuan do snippets", "tran tuan anh 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: (((("tran tuan ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran tuan ao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran tuan ao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran tuan ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.