Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu dan de snippets" » "khau dan de snippets", "khu doan de snippets", "thuc dan de snippets", "khu dan den snippets", "khu dang de snippets", "khu van de 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: (((("khu dan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khu dan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu dan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu dan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.