Perhaps you should try some spelling variations:
"dan tinh java snippets" » "dan trinh java snippets", "dan think java snippets", "dan tinh va snippets", "doan tinh java snippets", "dang tinh java snippets"
"dung cao cong snippets" » "duong cao cong snippets", "dung cho cong snippets", "dung co cong snippets", "dung cac cong snippets", "dung cao dang snippets", "dung cua cong 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: (((("dan tinh java snippets") or ("dung cao cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan tinh java snippets") OR ("dung cao cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan tinh java snippets ) or ( dung cao cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan tinh java snippets") or ("dung cao cong snippets"))) or ("locating bug code snippets"))*.