Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thong song » thong cong, thong dong, thong hong
hien xanh » hien hanh, chieu xanh, hien khanh
tao thong » tao trong, giao thong, toan thong
van thanh » ban thanh, van tuan
cong tao » cong tac, cong tan, cong bao
van phan » van phong, luan phan, 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 cong tao thong song ((van phan) OR (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh cong tao thong song ((van phan) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien nhanh)) - thanh cong tao thong song ((van phan) OR (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - thanh cong tao thong song ((van phan) OR (van thanh)) cau*.