Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
cong toan » cong tan, cong hoan, cong tuan
ho chieu » theo chieu, doi chieu, mot chieu
dong hoa » dong hoc, dong co
ban tu » van tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) tinh - thanh trung cua khong ((cong toan) or (dong hoa)) ban tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) tinh - thanh trung cua khong ((cong toan) OR (dong hoa)) ban tu.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) tinh - thanh trung cua khong ((cong toan) or (dong hoa)) ban tu*.