Perhaps you should try some spelling variations:
duong truong » duong trong, tang truong, duong cong
truong trung » tieng trung
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
tac khoan » cac khoan, tai khoan, tao khoang
khoan cam » khoa cam, khoan va, phan cam
cong tac » cong ty

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 xanh - thanh tuong ((duong truong) OR (truong trung)) cong tac khoan cam~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - thanh tuong ((duong truong) OR (truong trung)) cong tac khoan cam".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh tuong ((duong truong) OR (truong trung)) cong tac khoan cam*.