Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
cong thanh » dong thanh, cong trinh, truong thanh
hien xanh » hien hanh, chieu xanh, hien khanh
cua thong » cua thuong, cua khong, cua tong
anh bang » anh hoang, anh quang, tinh bang
bang cua » ban cua, mang cua, hang cua
cong tan » cong tac, cong san, cong ty
toan tap » toan 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)) - anh bang cua thong ((cong tan) or (cong thanh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - anh bang cua thong ((cong tan) OR (cong thanh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - anh bang cua thong ((cong tan) or (cong thanh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - anh bang cua thong ((cong tan) or (cong thanh)) toan tap*.