Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuoc khoi de snippets" » "buoc khoi de snippets", "cuoc doi de snippets", "quoc hoi de snippets", "cuoc khi de snippets", "cuoc khoa de snippets", "cuoc khoi he 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: (((("cuoc khoi 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: (((("cuoc khoi de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuoc khoi de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuoc khoi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.