Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
cuong tap » luong tap, cong tac, luong tai
ho chieu » theo chieu, hoc thieu, doi chieu
manh cua » doanh cua, ban cua
cong tap » cong tac, cong tan, tong tap
toan cao » toan ban, toan tap
toan cau » toan ban, toan tap, toan tai

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: ho chieu xanh - canh manh cua nhung ((cong tap) OR (cuong tap)) ((toan cao) OR (toan cau))~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - canh manh cua nhung ((cong tap) or (cuong tap)) ((toan cao) or (toan cau))*.