Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung luat le snippets" » "dung luan le snippets", "dung quat le snippets", "dung cua le snippets", "dung luat ve snippets", "dung luat ke snippets", "dung luat de 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: (((("dung luat le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung luat le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung luat le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung luat le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.