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