Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hien xanh » hien hanh, hien nhanh, chieu xanh
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
cua hang » cua dang, cua cong, cua ban
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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 xanh) or (hieu lang)) - hanh trang ((cua hang) OR (cua nhung)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hieu lang)) - hanh trang ((cua hang) OR (cua nhung)) cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hieu lang)) - hanh trang ((cua hang) OR (cua nhung)) cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hieu lang)) - hanh trang ((cua hang) OR (cua nhung)) cong dan toan cau*.