Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"doi ca robot snippets" » "doi a robot snippets", "doi cho robot snippets", "doi tao robot snippets", "doi cua robot snippets", "doi cay robot snippets", "duoi ca robot snippets"
"locating bug core snippets" » "locating bug code 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 java code snippets") or ("doi ca robot snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("doi ca robot snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doi ca robot snippets ))) or ( locating bug core snippets ))*.