Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
thong cong » trong cong, thong thong, phong chong
hien xanh » hien hanh, hien nhanh, hien khanh
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

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