Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
anh dung » anh huong, ung dung, ap dung
anh dong » anh huong, anh son
luan han » luan hoan, luan phan, luan van
han cong » phan cong, hang cong, hanh cong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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 tieu xanh - ((((anh dung) OR (sach dung))) OR (anh dong)) luan han cong tan toan cao~.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((((anh dung) or (sach dung))) or (anh dong)) luan han cong tan toan cao*.