Perhaps you should try some spelling variations:
nhung thoi » nhung thi, phung thi, nhung loi
bien nang » bien nong, bien dang, dien nang
muong hoc » duong hoc, tuong hoc, muong hoa
bai bien » tai bien, bai dien, bat bien
boi dung » boi duong, noi dung, hoi dung
dung hoc » dong hoc, dung thuoc, trung hoc
thoi que » thoi quen, thon que, thong que
que lang » quet lang, quan lang, que quang
hoc mot » hoc moi
hoc mo » hoc moi, hoc mon, hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( nhung bai bien nang. boi dung hoc mo ) or ( nhung thoi que lang. nguoi muong hoc mot ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung bai bien nang. boi dung hoc mo ) OR ( nhung thoi que lang. nguoi muong hoc mot )).
• Adding a wildcard symbol may retrieve word variants: (( nhung bai bien nang. boi dung hoc mo ) or ( nhung thoi que lang. nguoi muong hoc mot ))*.