Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan ban » luan van, luan san, luan han
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cau » 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 - hanh tang luan ban ((((cong tan) or (cong dong))) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh tang luan ban ((((cong tan) OR (cong dong))) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tang luan ban ((((cong tan) or (cong dong))) or (cong san)) toan cau*.