Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trang lai du snippets" » "trang tai du snippets", "trang vai du snippets", "trang lam du snippets", "trang lap du snippets", "trang lai su snippets", "trang li du 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: (((("trang lai du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trang lai du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trang lai du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trang lai du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.