Perhaps you should try some spelling variations:
dung thoi » dung thi, dung thuoc, dung thong
quen vang » quan van, que van, que lang
dung hoc » dong hoc, dung thuoc, trung hoc
hoc moit » hoc moi, hoc mot, hoc noi
dung toi » dung tai, dung doi, dung tri
toi quy » tai quy, doi quy, noi quy
quy van » duy van, qua van, quyet van
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: (( dung thoi quen vang. tin dung hoc moit ) or ( dung toi quy van. tin dung hoc mo ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( dung thoi quen vang. tin dung hoc moit ) OR ( dung toi quy van. tin dung hoc mo )).
• Adding a wildcard symbol may retrieve word variants: (( dung thoi quen vang. tin dung hoc moit ) or ( dung toi quy van. tin dung hoc mo ))*.