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