Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu cua cau snippets" » "ngu ca cau snippets", "ngu cu cau snippets", "ngu chua cau snippets", "ngu cua cac snippets", "ngu cua chu 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: (((("ngu cua 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: (((("ngu cua cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu cua cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu cua cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.