Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » thong cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
van phan » van phong, van thanh, luan phan
phan cac » nhan cach, phan dau, phan lap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh cua ((((nhung cong) OR (dung cong))) OR (trong cong)) van phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh tranh cua ((((nhung cong) OR (dung cong))) or (trong cong)) van phan cac~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh cua ((((nhung cong) OR (dung cong))) or (trong cong)) van phan cac*.