Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhiet tach » chiet tach
khong cong » thong cong, khong cang, chong cong
hoc nhiet » hoc thiet, hoc nghien, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua khong » hua khong, cua phuong, cua thuong
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc nhiet tach - thanh trung cua khong cong ((tan toan) or (tap toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc nhiet tach - thanh trung cua khong cong ((tan toan) OR (tap toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc nhiet tach - thanh trung cua khong cong ((tan toan) or (tap toan)) cao*.