Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung cac xe snippets" » "luong cac xe snippets", "dung cho xe snippets", "dung tai xe snippets", "dung cac he snippets", "dung cac ke snippets", "dung cac le 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 cac xe 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 cac xe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac xe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac xe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.