Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
thien anh » thien danh, tien anh, thien thanh
hien hanh » dieu hanh
bang cong » dang cong, bang song, hang cong
trang va » tran van, hang va
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 ((thien anh) or (hien hanh)) - hanh trang va ((nhung cong) or (bang cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien anh) OR (hien hanh)) - hanh trang va ((nhung cong) OR (bang cong)) dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien anh) or (hien hanh)) - hanh trang va ((nhung cong) or (bang cong)) dan toan cao*.