Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dai tao trinh snippets" » "dai tao tinh snippets", "dai tho trinh snippets", "dai giao trinh snippets", "dai thao trinh snippets", "dao tao trinh snippets", "tai tao 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 ("dai tao trinh snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dai tao trinh snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dai tao trinh snippets"))) or ("locating bug core snippets"))*.