Perhaps you should try some spelling variations:
truong quan » trong quan, thong quan, luong quan
chieu sang » chieu sach, chieu xanh, hieu lang
truong cua » truong ca, truong cao, huong cua
doi chieu » doc hieu, doi chi, ho chieu
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
than cau » phan cau, than cap, thanh chau
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: doi chieu sang - thanh ((truong cua) OR (truong quan)) hang cong tac ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((truong cua) OR (truong quan)) hang cong tac ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh ((truong cua) OR (truong quan)) hang cong tac ((than cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((truong cua) OR (truong quan)) hang cong tac ((than cau) or (toan cau))*.