Perhaps you should try some spelling variations:
hoang thanh » hoang anh, dong thanh, hoang xanh
chieu sach » chinh sach, chiet tach, chieu sang
thanh luan » tranh luan, thanh xuan, thanh tuan
doi chieu » doc hieu, doi chi, mot chieu
luan cong » luat cong, luong cong, luan chung
cong tap » cuong tap, cong tac, cong tan
toan cau » toan ban, toan tap, toan tai
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: doi chieu sach - minh hoang thanh luan cong tap ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - minh hoang thanh luan cong tap ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - minh hoang thanh luan cong tap ((toan cau) OR (toan cao))*.