Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"duoc viet doi snippets" » "nuoc viet doi snippets", "duc viet doi snippets", "quoc viet doi snippets", "duoc viet duoi snippets", "duoc viet voi snippets", "duoc nhiet 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 ("duoc viet doi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( duoc viet doi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("duoc viet doi snippets"))) or ("locating bug core snippets"))*.