Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh han » hanh nhan, hanh phan, hanh san
va thong » va thuong, va phuong, he thong
dan toan » van toan, dan than, manh toan
van than » van thanh, van thang, van tuan
han va » hang va, hanh va, nhan va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh han va thong cong ((dan toan) or (van than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh han va thong cong ((dan toan) OR (van than)) tap*.