Perhaps you should try some spelling variations:
"dinh vien java snippets" » "sinh vien java snippets", "dinh viet java snippets", "dinh dien java snippets", "dinh vien va snippets", "dinh vien java slippers"
"trinh java java snippets" » "trinh java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dinh vien java snippets") or ("trinh java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dinh vien java snippets") OR ("trinh java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dinh vien java snippets ) or ( trinh java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dinh vien java snippets") or ("trinh java java snippets"))) or ("locating bug code snippets"))*.