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