Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hien hanh » dieu hanh
dung cong » dung trong
anh hung » anh huong, manh hung, anh dung
hung cua » huong cua, chung cua, khung cua
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
san chat » van chat, san chay, ban chat
chat cap » chat cam, chat cao, cao cap

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 hanh) or (chieu sang)) - anh hung cua dung cong san chat cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (chieu sang)) - anh hung cua dung cong san chat cap*.