Perhaps you should try some spelling variations:
dang thuoc » dung thuoc
phung thai » phung thi, hung thai, phong thai
nhung loi » nhung bai, nhung bi, nhung gi
doi tuong » moi truong, doi song
tuong hoc » truong hoc, tuong ho, duong hoc
thai cua » than cua, tai cuc, tri cua
noi dang » noi dung, hoi dang, moi dang
thuoc mo » thuoc moi, thuoc ma, thuoc bo
loi qua » hoi qua, loi que, loi hua
qua van » quan van, qua ban, qua san
hoc moi » hoc noi
cua dan » cua dang, cua ban, ca dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( nhung loi qua van. doi tuong hoc moi ) or ( phung thai cua dan. noi dang thuoc mo ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung loi qua van. doi tuong hoc moi ) OR ( phung thai cua dan. noi dang thuoc mo )).
• Adding a wildcard symbol may retrieve word variants: (( nhung loi qua van. doi tuong hoc moi ) or ( phung thai cua dan. noi dang thuoc mo ))*.