Perhaps you should try some spelling variations:
trieu minh » trien minh, trien kinh, trinh minh
tong cong » trong cong, cong cong, dung cong
mang cua » manh cua, dung cua, cong cua
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((trieu minh) or (trieu tinh)) - hanh ((mang cua) OR (ban cua)) tong cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((trieu minh) OR (trieu tinh)) - hanh ((mang cua) OR (ban cua)) tong cong san than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((trieu minh) or (trieu tinh)) - hanh ((mang cua) OR (ban cua)) tong cong san than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((trieu minh) or (trieu tinh)) - hanh ((mang cua) OR (ban cua)) tong cong san than cau*.