Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran phan le snippets" » "toan phan le snippets", "than phan le snippets", "tra phan le snippets", "tran pham le snippets", "tran phan mem snippets", "tran phan lap 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 phan le 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 phan le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran phan le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran phan le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.