Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trung quan » truong quan, trong quan, truong quang
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - hanh ((trung quan) OR (trung tuan)) nhung cong tac toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - hanh ((trung quan) OR (trung tuan)) nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - hanh ((trung quan) OR (trung tuan)) nhung cong tac toan cau*.