Perhaps you should try some spelling variations:
phung trinh » phuong trinh, chuong trinh, hung thinh
trinh quan » tinh quang, trinh luat, trinh han
nhung thoi » nhung thi, phung thi, nhung loi
doi tuong » moi truong, doi song
tuong hoc » truong hoc, tuong ho, duong hoc
quen vang » que van, que lang, quen hanh
quan van » luan van, quan va, quan luan
dong hoc » dong co, dong luc
bi dong » bi cong, di dong, bien dong
hoc mon » hoc moi, hoc mot, hoc cong
hoc mo » hoc moi, hoc mot, 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: (( phung trinh quan van. doi tuong hoc mo ) or ( nhung thoi quen vang. bi dong hoc mon ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( phung trinh quan van. doi tuong hoc mo ) OR ( nhung thoi quen vang. bi dong hoc mon )).
• Adding a wildcard symbol may retrieve word variants: (( phung trinh quan van. doi tuong hoc mo ) or ( nhung thoi quen vang. bi dong hoc mon ))*.