Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan chat le snippets" » "nhan chan le snippets", "phan chat le snippets", "chuan chat le snippets", "nhan nhat le snippets", "nhan hat le snippets", "nhan chat lien 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: (((("nhan chat 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: (((("nhan chat le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan chat le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan chat le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.