Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien anh » thien danh, tien anh, thien thanh
hieu manh » chieu xanh, hieu nganh, hien hanh
trung cua » truong cua, trung tuan, trung cap
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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 ((thien anh) or (((hieu manh) or (dieu hanh)))) - thanh trung cua dung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (((hieu manh) OR (dieu hanh)))) - thanh trung cua dung cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (((hieu manh) or (dieu hanh)))) - thanh trung cua dung cong tac toan cau*.