Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
phong cong » phong chong, thong cong, chong cong
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cac » trinh cac, thanh cac, tranh cai
chan cap » than cap, cao cap, phan cac
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - canh tranh cac ((phong cong) or (nhung cong)) dan ((chan cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - canh tranh cac ((phong cong) OR (nhung cong)) dan ((chan cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - canh tranh cac ((phong cong) or (nhung cong)) dan ((chan cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh tranh cac ((phong cong) or (nhung cong)) dan ((chan cap) OR (khan cap))*.