Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hinh sinh » tinh sinh, hinh dinh, hinh kinh
dong cong » duong cong, dung cong, dang cong
cong toan » cong tan, cong hoan, cong tuan
giang man » giang van, giang san, giang tan
giang mai » giang hai, giang giai, giang day
sinh cua » manh cua, dinh cuu, sinh va
cua dong » chua dong, cua cong, cua dang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu sang)) - hinh sinh cua dong cong toan ((giang man) OR (giang mai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu sang)) - hinh sinh cua dong cong toan ((giang man) OR (giang mai))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu sang)) - hinh sinh cua dong cong toan ((giang man) OR (giang mai))*".