Perhaps you should try some spelling variations:
nhung hoi » nhung thoi, nhung loi, nhung noi
con duong » van duong
duong noi » duong loi, duong nhi, duong hoi
thi luan » thi lan, thi xuan, thi loan
tac dung » sach dung, xay dung, tin dung
dung hoc » dong hoc, dung thuoc, trung hoc
hoi qua » hoi cua, hoa qua, hai quan
qua van » quan van, qua ban, qua san
noi co » noi cho, noi bo, moi co
hoc mo » hoc moi, hoc mot, hoc mon

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( nhung hoi qua van. con duong noi co ) or ( phung thi luan van. tac dung hoc mo ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung hoi qua van. con duong noi co ) OR ( phung thi luan van. tac dung hoc mo )).
• Adding a wildcard symbol may retrieve word variants: (( nhung hoi qua van. con duong noi co ) or ( phung thi luan van. tac dung hoc mo ))*.