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