Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao dinh chi snippets" » "nam dinh chi snippets", "dao dinh chi snippets", "ngo dinh chi snippets", "nao dinh thi snippets", "nao dinh tri snippets", "nao dinh moi 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 chi 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 chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao dinh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao dinh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.