Perhaps you should try some spelling variations:
nhung thoi » phung thi, nhung loi, nhung tri
nhung thi » phung thi, nhung tri, nhung chi
thoi quan » thoi quen, thi quan, thong quan
hoc congi » hoc bong, hoc hong, hoc song
thi xuan » thi xa, thi lan
hoc dung » hoc ung, hoc dan, tac dung
dung hoc » dung thuoc, trung hoc, dung khoa
hoc cong » hoc co, cac cong
boi dong » boi duong, hoi dong, bi dong
dong hoc » dong co, dong luc
xuan va » xuat va, luan va, xuan ha
quan va » quan vi, quan ha, luan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( nhung thi xuan va. hoc dung hoc cong ) or ( nhung thoi quan va. boi dong hoc congi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung thi xuan va. hoc dung hoc cong ) OR ( nhung thoi quan va. boi dong hoc congi )).
• Adding a wildcard symbol may retrieve word variants: (( nhung thi xuan va. hoc dung hoc cong ) or ( nhung thoi quan va. boi dong hoc congi ))*.