Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"so cong doi snippets" » "so vong doi snippets", "so cong dot snippets", "so cong goi snippets", "bo cong doi snippets", "cao cong doi snippets", "hoc cong doi 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 ("so cong doi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( so cong doi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("so cong doi snippets"))) or ("locating bug core snippets"))*.