Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"pham le robot snippets" » "pham ke robot snippets", "pham _ robot snippets", "pham a robot snippets", "phan le robot snippets", "pham lan robot snippets"
"locating bug core snippets" » "locating bug code 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 ("pham le robot snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( pham le robot snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("pham le robot snippets"))) or ("locating bug core snippets"))*.