Perhaps you should try some spelling variations:
"hanh viet trinh snippets" » "hanh viet trung snippets", "hanh viet thanh snippets", "hanh viet trong snippets", "anh viet trinh snippets", "danh viet trinh snippets", "han viet trinh snippets", "hanh viet trinh slippers"
"dung hung code snippets" » "dung chung code snippets", "dung nhung code snippets", "dung huong code snippets", "dung hung 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: (((("hanh viet trinh snippets") or ("dung hung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh viet trinh snippets") OR ("dung hung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh viet trinh snippets ) or ( dung hung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh viet trinh snippets") or ("dung hung code snippets"))) or ("locating bug code snippets"))*.