Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan qua cua snippets" » "nhan cua cua snippets", "nhat qua cua snippets", "phan quan cua snippets", "nhan quan cua snippets", "nhan quang cua snippets", "nhan qua quan 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: (((("nhan qua 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: (((("nhan qua cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan qua cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan qua cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.