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