Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
canh hanh » canh tranh, danh thanh, ban hanh
dung cong » dung trong
vang phan » nang phan, quang phan, va phan
van phan » van phong, van thanh, luan phan
doi chi » doi khi
chi anh » chi danh, chi hanh, thi anh
vi dung » va dung, vi ung, vi dong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi anh - ((canh hanh) or (xanh hanh)) vi dung cong ((vang phan) OR (van phan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi anh - ((canh hanh) OR (xanh hanh)) vi dung cong ((vang phan) OR (van phan)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi anh - ((canh hanh) or (xanh hanh)) vi dung cong ((vang phan) OR (van phan)) cac".
• Adding a wildcard symbol may retrieve word variants: doi chi anh - ((canh hanh) or (xanh hanh)) vi dung cong ((vang phan) OR (van phan)) cac*.