Perhaps you should try some spelling variations:
"using real code snippets" » "using metal code snippets", "using raw code snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung a robot snippets" » "dung _ robot snippets", "dung tao robot snippets", "dung tay robot snippets", "dung va robot snippets", "dung ha robot snippets", "dung ai robot snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using real code snippets") or ("dung a robot snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using real code snippets") OR ("dung a robot snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using real code snippets ) or ( dung a robot snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using real code snippets") or ("dung a robot snippets"))) or ("locating bug core snippets"))*.