Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
co tranh » co thanh, co trach, co trinh
hoa dung » khoa dung, hoa duong, hoa dong
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan tat » ban tat, toan tap, toan tai

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)) - ((canh tranh) or (co tranh)) hoa dung cong van tan tat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - ((canh tranh) OR (co tranh)) hoa dung cong van tan tat.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - ((canh tranh) or (co tranh)) hoa dung cong van tan tat*.