Perhaps you should try some spelling variations:
thong xuong » khong xuong, thong duong, thong huong
vien thanh » viet thanh, tien thanh, dien thanh
xuong manh » duong manh, luong manh, xuong banh
hanh dinh » thanh dinh, hinh dinh, hanh tinh
thi thong » thi thuong, thi hong, thi khong
manh toan » thanh toan, anh tuan, tinh toan
dinh thi » dinh tri
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 ((vien nganh) or (vien thanh)) - hanh dinh thi thong xuong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien nganh) OR (vien thanh)) - hanh dinh thi thong xuong manh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((vien nganh) or (vien thanh)) - hanh dinh thi thong xuong manh toan cao*.