Perhaps you should try some spelling variations:
trang thiet » trong thiet, trinh thiet, toan thiet
thiet chung » thien chuong, trieu chung, hien chung
tinh trang » minh trang, tinh quang, tinh toan
chung cong » nhung cong, chong cong, phung cong
cong thai » cong hai, hong thai, cong thanh
thai luan » thi luan, thai luat, phap luan
ho chieu » theo chieu, hoc thieu, mot chieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (toc thieu)) sang - tinh trang thiet chung cong thai luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) sang - tinh trang thiet chung cong thai luan van*.