Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
tieu xanh » tieu danh, chieu xanh, dieu hanh
van manh » van minh, van anh, van hanh
manh qua » manh quan, manh cua, danh qua
qua dung » quang dung, su dung, qua song
cong san » cong tac
toan tap » toan 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 tieu xanh - van manh qua dung ((cong thanh) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - van manh qua dung ((cong thanh) OR (cong san)) toan tap.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - van manh qua dung ((cong thanh) or (cong san)) toan tap*.