Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
dong doanh » dung doanh, trong doanh, doanh doanh
hoc chieu » hoc thieu, ho chieu, hoc hien
luan dinh » xuan dinh, luan kinh, luan danh
long doan » cong doan, rong doanh, dong don
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 trinh luan dinh ((long doan) OR (dong doanh)) ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - canh trinh luan dinh ((long doan) OR (dong doanh)) ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - canh trinh luan dinh ((long doan) OR (dong doanh)) ((toan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh trinh luan dinh ((long doan) OR (dong doanh)) ((toan cau) or (toan tap))*.