Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thuyet » hoc chuyen
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong dang » cong dong, cong dan, cong dung
dang toan » dang tran, dan toan, dung toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thuyet) or (hoc hien)) tach - thanh trung cua thong cong dang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thuyet) OR (hoc hien)) tach - thanh trung cua thong cong dang toan cau*.