Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
theo chieu » ho chieu, theo chu, thi chieu
thanh toan » thanh hoa, thanh san, tinh toan
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
toan cao » toan ban, toan tap
ban cua » ban quan

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: ((theo chieu) OR (theo tieu)) xanh - hanh ((tang cua) OR (ban cua)) dung cong thanh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo tieu)) xanh - hanh ((tang cua) or (ban cua)) dung cong thanh toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo tieu)) xanh - hanh ((tang cua) or (ban cua)) dung cong thanh toan cao*.