Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"tang a robot snippets" » "tang _ robot snippets", "tang tao robot snippets", "tang tay robot snippets", "tang ma robot snippets", "tang ha robot snippets", "tang ca robot snippets"

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

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