Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"he trong lop snippets" » "he truong lop snippets", "he trong loi snippets", "he trong chop snippets", "he thong lop snippets", "he trung lop snippets", "le trong lop snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("he trong lop snippets") OR ("using java java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( he trong lop snippets ) or ( using java java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("he trong lop snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.