Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nhanh » hoc phan
chu nhan » chau nhan, cu nhan, chu han
nhan van » nhan dan, nhan va, phan van
su sach » so sach, vu sach
sach do » sach dao, sach doi, sach de
hoi chu » hoi chuc
do dap » doi dap, do dai, do dac
hoc xa » hoc ma

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach do dap, nghien cua mot ((hoc nganh) OR (hoc nhanh)) hoa hoc xa hoi chu nhan van~.
• Adding a wildcard symbol may retrieve word variants: su sach do dap, nghien cua mot ((hoc nganh) or (hoc nhanh)) hoa hoc xa hoi chu nhan van*.