Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
cua bang » chua bang, cua ban, cua dang
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sang - canh doanh cua bang phuong tinh ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - canh doanh cua bang phuong tinh ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - canh doanh cua bang phuong tinh ((toan cao) or (toan ban))*.