Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
minh trang » tinh trang, minh hoang, minh tuan
hien xanh » hien hanh, hien nhanh, chieu xanh
cong van » cong vang, cong san, song van
van doan » van doanh, van toan, van hoan
doan cap » doanh cao, dan ca, toan cao

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 - ((minh trang) or (canh tranh)) he thong cong van doan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((minh trang) OR (canh tranh)) he thong cong van doan cap.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((minh trang) or (canh tranh)) he thong cong van doan cap*.