Perhaps you should try some spelling variations:
"dung trung code snippets" » "dung trong code snippets", "quang trung code snippets", "truong trung code snippets", "dung trung co snippets", "dung trung code slippers"
"gian cac code snippets" » "gian dan code snippets", "gian cua code snippets", "gian cac cong snippets", "gian cac co snippets", "gian cac che snippets", "gian cac code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("gian cac code snippets") or ("dung trung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian cac code snippets") OR ("dung trung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian cac code snippets ) or ( dung trung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian cac code snippets") or ("dung trung code snippets"))) or ("locating bug code snippets"))*.