Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu nganh » vien nganh, hiem ngan, hieu manh
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
thong san » thong sang, trong san, thong van
san toan » van toan, dan toan, manh toan
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 ((hieu nganh) or (dieu hanh)) - thanh trung cua thong thong san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (dieu hanh)) - thanh trung cua thong thong san toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (dieu hanh)) - thanh trung cua thong thong san toan cao*.