Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet tach » chiet tach, thien hach
thuat tach » thuat sach, thuat mach, thuat tac
nhung cong » dung cong, thong cong, hang cong
cong doanh » cong danh, cong doan, dong doanh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet tach) OR (thuat tach)) - thanh trung cua nhung cong doanh ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet tach) OR (thuat tach)) - thanh trung cua nhung cong doanh ((phan cau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet tach) OR (thuat tach)) - thanh trung cua nhung cong doanh ((phan cau) or (phan cac))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet tach) OR (thuat tach)) - thanh trung cua nhung cong doanh ((phan cau) or (phan cac))*.