Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
han cuong » van cuong, tan cuong, han duong
cuong bai » uong bi, cuong ma
anh dung » anh dong, anh huong, sach dung
luan han » luan hoan, luan phan, luan van
bai toan » bai tap
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 dung luan han cuong bai toan cao~.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - anh dung luan han cuong bai toan cao*.