Perhaps you should try some spelling variations:
duong truong » duong trong, truong trung, tang truong
thanh tuong » thanh thuong, thanh tung, thanh huong
truong cong » trong cong, truong dong, truong long
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
khoan cam » khoa cam, khoan va, thuan cam
cong tac » cong ty
phan cam » phan cac, phan cau, phan cang

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) OR (chieu sach)) - thanh tuong duong truong cong tac ((khoan cam) or (phan cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - thanh tuong duong truong cong tac ((khoan cam) OR (phan cam)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu sach)) - thanh tuong duong truong cong tac ((khoan cam) or (phan cam))".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu sach)) - thanh tuong duong truong cong tac ((khoan cam) or (phan cam))*.