Perhaps you should try some spelling variations:
nhung thoi » nhung thi, nhung loi, nhung tri
doi tuong » moi truong, doi song
tuong hoc » truong hoc, tuong ho, duong hoc
dung quoc » dang quoc, dong quoc, trung quoc
thoi qua » hoi qua, thoi rua, thoi xua
hoc dung » hoc ung, hoc dan, tac dung
qua van » quan van, qua ban, qua san
hoc moi » hoc noi
thi cua » thai cua, thi cuc, tri cua
cua dan » cua dang, cua ban, ca dan
quoc mo » uoc mo, quoc co, quoc lo

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

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