Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam nang du snippets" » "nham nang du snippets", "nam ngang du snippets", "cam nang du snippets", "nam nang tu snippets", "nam nang luc snippets", "nam nang doc 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: (((("nam nang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam nang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam nang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam nang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.