Perhaps you should try some spelling variations:
thong xuong » khong xuong, thong huong, thong muong
thong duong » tuong duong, thong dung, thong huong
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh dinh » thanh dinh, hinh dinh, hanh tinh
hoc hieu » hoc thieu, hoc hien, doc hieu
dinh thi » dinh tri
dan toan » van toan, dan than, 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 - hanh dinh thi ((thong xuong) or (thong duong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu nganh - hanh dinh thi ((thong xuong) OR (thong duong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - hanh dinh thi ((thong xuong) or (thong duong)) dan toan cao*.