Perhaps you should try some spelling variations:
tuong thuoc » luong thuoc, thuong thuc, dung thuoc
nhung thoi » nhung thi, phung thi, nhung loi
nhung phu » nhung pham, nhung phat, nhung khuc
phu quyet » phu xuyen, chu quyen, phi tuyet
doi tuong » moi truong, doi song
quen luan » quan luan, bien luan, dien luan
van duong » van dong, van dung, van phong
duong hoc » dong hoc, dung hoc, duong hoi
thuoc ma » hoc ma, duoc ma
hoc mon » hoc moi, hoc mot, hoc cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( nhung phu quyet van. doi tuong thuoc ma ) or ( nhung thoi quen luan. van duong hoc mon ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung phu quyet van. doi tuong thuoc ma ) OR ( nhung thoi quen luan. van duong hoc mon )).
• Adding a wildcard symbol may retrieve word variants: (( nhung phu quyet van. doi tuong thuoc ma ) or ( nhung thoi quen luan. van duong hoc mon ))*.