Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, song van, cong tan
cong san » cong tac
phan cau » phan dau, phan cac, 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 van) OR (cong san)) ((phan cau) OR (phan tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh tranh cua nhung ((cong van) OR (cong san)) ((phan cau) or (phan tu))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh cua nhung ((cong van) OR (cong san)) ((phan cau) or (phan tu))*.