Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"co duoc trinh snippets" » "co doc trinh snippets", "co quoc thinh snippets", "co duoc tren snippets", "tao duoc trinh snippets", "hoa duoc trinh snippets", "hoc duoc trinh 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 ("co duoc trinh snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( co duoc trinh snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("co duoc trinh snippets"))) or ("locating bug core snippets"))*.