Perhaps you should try some spelling variations:
dung thuong » dung trong, hang thuong, cong thuong
thuong phap » phuong phap, thuong pham, thuong phat
hanh trang » thanh trung, canh tranh, hanh trinh
hien hanh » dieu hanh
hanh nang » ganh nang, hanh mang, chang nang
phap toan » phap hoan, phap luan, phap phan
anh nang » ganh nang, anh bang, anh dang
cua dung » cua dang, cua dong, qua dung
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 hien hanh - ((((hanh nang) or (hanh trang))) or (anh nang)) cua dung thuong phap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hanh - ((((hanh nang) OR (hanh trang))) OR (anh nang)) cua dung thuong phap toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien hanh - ((((hanh nang) or (hanh trang))) or (anh nang)) cua dung thuong phap toan cau*.