Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam tan doan snippets" » "lam tran doan snippets", "lam tap doan snippets", "lam van doan snippets", "lam san doan snippets", "lam tai doan snippets", "nam tan doan 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: (((("lam tan doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lam tan doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam tan doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam tan doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.