Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
canh thanh » canh tranh, danh thanh, anh thanh
thanh van » thanh san, thanh toan, thanh phan
tong cong » trong cong, cong cong, dang cong
dung cong » dung trong
phan cau » phan dau, phan cac, phan lap

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 xanh - canh thanh van ((tong cong) or (dung cong)) dan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - canh thanh van ((tong cong) OR (dung cong)) dan ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - canh thanh van ((tong cong) or (dung cong)) dan ((phan cau) or (phan tu))*.