Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
tieu xanh » tieu danh, chieu xanh, dieu hanh
cua trung » cua truong, xuan trung, cua nhung
anh dang » anh dong, anh dung, anh bang
dang cua » dung cua, dong cua, mang cua
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu xanh - anh dang cua trung ((cong thanh) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - anh dang cua trung ((cong thanh) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh dang cua trung ((cong thanh) or (cong san)) toan cao*.