Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
ho cuu » ho chu, so cuu, khao cuu
ho cua » hoc cua, hoi cua, hoa cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho cuu) OR (ho cua)) tinh - hanh ((trung cua) or (tang cua)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho cuu) OR (ho cua)) tinh - hanh ((trung cua) OR (tang cua)) nhung cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho cuu) OR (ho cua)) tinh - hanh ((trung cua) or (tang cua)) nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((ho cuu) OR (ho cua)) tinh - hanh ((trung cua) or (tang cua)) nhung cong tac toan cau*.