Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tung » thanh cong
chong cong » cong cong, thong cong, cuong cong
hien xanh » hien hanh, chieu xanh, hien khanh
cua chong » cua cong, cua chung, cua khong
tung cua » trung cua, tuong cua, dung cua
cong van » cong vang, cong san, song van
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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)) - thanh tung cua chong cong van ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh tung cua chong cong van ((toan tai) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - thanh tung cua chong cong van ((toan tai) or (toan ban))*".