Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao co cua snippets" » "nao bo cua snippets", "bao co cua snippets", "nao con cua snippets", "nao ca cua snippets", "nao cong cua 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 co cua 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 co cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao co cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao co cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.