Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
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 tan » cong tac, cong ty, cong ha
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 tan) OR (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 tan) OR (cong thanh))) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - anh dang cua trung ((((cong tan) OR (cong thanh))) or (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh dang cua trung ((((cong tan) OR (cong thanh))) or (cong san)) toan cao*.