Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
cong chat » cong nhat, cong cua, cong ha
dan thien » doan thien, dang thien, dan thiet
luan ban » luan van, luan san, luan han
luan dan » luan danh, luan van, luat dan
cu luong » cat luong, huy luong, do luong
ban tai » van tai, han tai, ban thi
cong cu » chung cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( cong trinh luan ban tai cong chat luong ) or ( cong trinh luan dan thien cong cu luong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cong trinh luan ban tai cong chat luong ) OR ( cong trinh luan dan thien cong cu luong )).
• Adding a wildcard symbol may retrieve word variants: (( cong trinh luan ban tai cong chat luong ) or ( cong trinh luan dan thien cong cu luong ))*.