Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
hieu nganh » vien nganh, hiem ngan, hieu manh
cua thuong » cua truong, cua phuong, ca thuong
van thang » van thanh, van khang, van hang
doc hieu » toc thieu, hoc thieu, hoc hien
hanh han » hanh nhan, hanh phan, hanh san
dan toan » van toan, dan than, manh toan
van chat » cao chat
han cua » hang cua, nhan cua, than cua

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 nganh - hanh han cua thuong cong ((dan toan) or (((van chat) or (van thang)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - hanh han cua thuong cong ((dan toan) OR (((van chat) OR (van thang)))) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - hanh han cua thuong cong ((dan toan) or (((van chat) or (van thang)))) cau*.