Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dan tinh doi snippets" » "doan tinh doi snippets", "dang tinh doi snippets", "dan trinh doi snippets", "dan trinh doc snippets", "dan trinh do snippets", "dan tinh hoc 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 ("dan tinh doi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dan tinh doi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dan tinh doi snippets"))) or ("locating bug core snippets"))*.