Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao dinh moi snippets" » "nam dinh moi snippets", "dao dinh moi snippets", "ngo dinh moi snippets", "nao dinh so snippets", "nao dinh tri snippets", "nao dinh thi 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: (((("nao dinh moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao dinh moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao dinh moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao dinh moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.