Perhaps you should try some spelling variations:
"dong trinh java snippets" » "cong trinh java snippets", "dong tinh java snippets", "dong tranh java snippets"
"huong cau cong snippets" » "thuong chau cong snippets", "huong dan cong snippets", "huong cua cong snippets", "huong cac cong snippets", "huong cuu cong snippets", "huong cao 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: (((("huong cau cong snippets") or ("dong trinh java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huong cau cong snippets") OR ("dong trinh java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huong cau cong snippets ) or ( dong trinh java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huong cau cong snippets") or ("dong trinh java snippets"))) or ("locating bug code snippets"))*.