Perhaps you should try some spelling variations:
cong truong » cuong truong, cong thuong, cong trong
hanh trang » thanh trung, canh tranh, hanh trinh
thieu xanh » chieu xanh, thien anh, thien danh
trang cham » trong cham, tranh chap, tran chau
hieu manh » chieu xanh, hieu nganh, dieu hanh
cham cong » pham cong, chat cong, cua cong
dai toan » bai toan, dan toan, dai tan
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 ((thieu xanh) or (hieu manh)) - hanh trang cham cong truong dai toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - hanh trang cham cong truong dai toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - hanh trang cham cong truong dai toan cau*.