Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau nang du snippets" » "da nang du snippets", "dai nang du snippets", "dau bang du snippets", "dau nang tu snippets", "dau nang luc snippets", "dau 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: (((("dau 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: (((("dau nang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau nang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau nang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.