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