Perhaps you should try some spelling variations:
hien nganh » vien nganh, hien nhanh, hieu nganh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
tung tuan » trung tuan, hung tuan, quang tuan
dung cong » dung trong
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nganh - thanh tung tuan ((thong cong) or (dung cong)) van ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nganh - thanh tung tuan ((thong cong) OR (dung cong)) van ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien nganh - thanh tung tuan ((thong cong) or (dung cong)) van ((toan cau) or (toan ban))*.