Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac nghe cnc snippets" » "cap nghe cnc snippets", "cac nghi cnc snippets", "can nghe cnc snippets", "cac nghe cong snippets", "cac nghe che snippets", "cac 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: (((("cac 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: (((("cac nghe cnc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac nghe cnc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac nghe cnc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.