Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
nhat luong » chat luong, nhat thuong, chat long
nhat huong » nhat thuong, chat huong, chat luong
van thien » van tien, van hien, van chien
cong nhat » cong nhan, cong ha, cong suat
luan von » luan hoan, luan cong, luan ngon

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