Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tinh toan ho snippets" » "tinh toan hoc snippets", "tinh toan khoa snippets", "tinh toan cao snippets", "trinh toan ho snippets", "dinh toan ho snippets", "minh toan ho snippets"
"locating bug code snippets" » "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: (((("tinh toan ho snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tinh toan ho snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tinh toan ho snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tinh toan ho snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.