Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhac cu cau snippets" » "nhat cua cau snippets", "nhan cua cau snippets", "nhac cu cao snippets", "nhac co cau snippets", "nhac cu cu 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: (((("nhac cu cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhac cu cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhac cu cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhac cu cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.