Perhaps you should try some spelling variations:
phung thai » phung thi, hung thai, phong thai
nhung hoi » nhung thoi, nhung loi, nhung noi
doi tuong » moi truong, doi song
tuong hoc » truong hoc, tuong ho, duong hoc
dung quoc » dang quoc, dong quoc, trung quoc
thai cua » than cua, tai cuc, tri cua
tac dung » sach dung, xay dung, tin dung
hoi cua » hoi chuc
cua van » cua ban, cua vat, cua can
hoc moi » hoc noi
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 hoi cua van. doi tuong hoc moi ) or ( phung thai cua dan. tac dung quoc mo ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung hoi cua van. doi tuong hoc moi ) OR ( phung thai cua dan. tac dung quoc mo )).
• Adding a wildcard symbol may retrieve word variants: (( nhung hoi cua van. doi tuong hoc moi ) or ( phung thai cua dan. tac dung quoc mo ))*.