Perhaps you should try some spelling variations:
nhung trinh » nhung tinh, chuong trinh, phuong trinh
chung thi » phung thi, chung chi, nhung thi
doi tuong » moi truong, doi song
tuong uoc » huong uoc, tuong hoc, truong quoc
trinh duy » trinh duc, trinh dung, trinh thuy
boi duong » hai duong, con duong, noi dung
duong uoc » huong uoc, duong hoc, duong nguoc
thi quy » tai quy, thien quy, thi quynh
quy van » qua van, quyet van, quan van
duy van » duy vat, dung van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( chung thi quy van. doi tuong uoc mo ) OR ( nhung trinh duy van. boi duong uoc mo ))~.
• Adding a wildcard symbol may retrieve word variants: (( chung thi quy van. doi tuong uoc mo ) or ( nhung trinh duy van. boi duong uoc mo ))*.