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