Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
minh trang » tinh trang, minh hoang, minh tuan
thong cong » trong cong, tong cong, thong thong
hien xanh » hien hanh, chieu xanh, hien khanh
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) OR (hien nhanh)) - ((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) OR (hien nhanh)) - ((minh trang) OR (canh tranh)) he thong cong van doan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - ((minh trang) or (canh tranh)) he thong cong van doan cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - ((minh trang) or (canh tranh)) he thong cong van doan cap*.