Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
ban cong » bang cong, van cong, phan cong
cong tac » cong ty
tam ban » tai ban, tao ban, tay ban
ran cau » van cau, ban cau, tran chau
can cau » van cau, ban cau, ca cau

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 trung tam ban cong tac ((ran cau) OR (can cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh trung tam ban cong tac ((ran cau) OR (can cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung tam ban cong tac ((ran cau) OR (can cau))*.