Perhaps you should try some spelling variations:
"hoan trinh java snippets" » "khoan trich java snippets", "hoang thinh java snippets", "hanh trinh java snippets"
"dung cua co snippets" » "dung luan co snippets", "dung cho co snippets", "dung cua bo 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: (((("hoan trinh java snippets") or ("dung cua co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoan trinh java snippets") OR ("dung cua co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoan trinh java snippets ) or ( dung cua co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoan trinh java snippets") or ("dung cua co snippets"))) or ("locating bug code snippets"))*.