Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lam dau doi snippets" » "lan dau doi snippets", "lam giau doi snippets", "luat dau doi snippets", "lam cau doi snippets", "lam dau noi snippets", "lam dau do 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 dau doi 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 dau doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lam dau doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lam dau doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.