Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh quan » tinh quang, trinh quan, tin quan
quan tong » quan trong, quan dong, quan long
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (theo tieu)) xanh - hanh tinh quan tong cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo tieu)) xanh - hanh tinh quan tong cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo tieu)) xanh - hanh tinh quan tong cong san ((toan cau) or (toan ban))*.