Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
cua phuong » cuu phuong, cuc phuong, luan phuong
hieu manh » chieu xanh, dieu hanh, hien hanh
canh mang » cach mang, hanh mang, nhanh mang
mang cua » manh cua, dung cua, ban cua
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu manh) or (hieu nganh)) - canh mang cua phuong hoang ((van toan) OR (van tan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (hieu nganh)) - canh mang cua phuong hoang ((van toan) OR (van tan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu manh) or (hieu nganh)) - canh mang cua phuong hoang ((van toan) OR (van tan)) cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) or (hieu nganh)) - canh mang cua phuong hoang ((van toan) OR (van tan)) cau*.