Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh doanh » hang doanh, chinh doanh, kinh doanh
nhan tong » nhan trong, nhan thong, nhan tuong
tong cong » trong cong, cong cong, dung cong
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu tinh)) - ((hanh doanh) or (doanh doanh)) nhan tong cong tan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu tinh)) - ((hanh doanh) OR (doanh doanh)) nhan tong cong tan chan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu tinh)) - ((hanh doanh) or (doanh doanh)) nhan tong cong tan chan cau*.