Perhaps you should try some spelling variations:
"trang trinh o snippets" » "tra trinh o snippets", "trang tri o snippets", "thanh trinh o snippets", "trang trinh do snippets", "trang trinh co snippets", "trang trinh mo 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: (((("trang trinh o snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trang trinh o snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trang trinh o snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trang trinh o snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.