Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
san phan » san pham, van phan, sat phan

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 (((hang cong) OR (dang cong)))) san phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh tranh cua ((nhung cong) or (((hang cong) OR (dang cong)))) san phan tu~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh cua ((nhung cong) or (((hang cong) OR (dang cong)))) san phan tu*.