Perhaps you should try some spelling variations:
thanh trung » thanh tung
thiet tach » chiet tach, thuat tach
thien hach » thien thanh, hien hanh
trung tuan » trung thanh, trung tam, tran tuan
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
cong toan » cong tan, cong hoan, cong tuan
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet tach) or (thien hach)) - thanh trung tuan thong cong toan ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet tach) OR (thien hach)) - thanh trung tuan thong cong toan ((phan cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet tach) or (thien hach)) - thanh trung tuan thong cong toan ((phan cau) or (phan dau))*.