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