Perhaps you should try some spelling variations:
nhat thuong » nhat huong, phan thuong, luat thuong
trinh luan » trinh luat, trinh quan, trinh toan
cong chat » cong cua, cong ha, cong suat
trinh han » trinh quan
cong nhat » cong nhan, cong ha, cong suat
van tai » von tai, van tuan
han van » phan van, nhan van, hanh van

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 van tai cong chat luong ) or ( cong trinh han van tai cong nhat thuong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( cong trinh luan van tai cong chat luong ) OR ( cong trinh han van tai cong nhat thuong )).
• Adding a wildcard symbol may retrieve word variants: (( cong trinh luan van tai cong chat luong ) or ( cong trinh han van tai cong nhat thuong ))*.