Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
dang cong » dung cong
van thanh » ban thanh, van tuan
anh nang » ganh nang, anh bang, anh dang
nang dua » nang du, nang suat, nang quan
dua dang » cua dang, da dang, dua lang
dan toan » van toan, dan than, manh toan
van tan » van tuan, van ban, van tai

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 - anh nang dua dang cong ((dan toan) or (((van tan) or (van thanh)))) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - anh nang dua dang cong ((dan toan) OR (((van tan) OR (van thanh)))) cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - anh nang dua dang cong ((dan toan) or (((van tan) or (van thanh)))) cao*.