Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh cong » nhanh chong, thanh cong
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
sanh hoi » sach hoi, hanh thoi, sinh hoc
cong hoc » dong hoc, cong hoa, cong coc
van nhan » van phan, danh nhan, van khanh
so sanh » do sanh
mot hoc » mon hoc, mo hoc, mot goc
tap hai » tap bai, tap dai, tai hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh hoi dap, nghien cua mot hoc nganh cong hoc tap hai ((van nhan) or (van thanh)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh hoi dap, nghien cua mot hoc nganh cong hoc tap hai ((van nhan) OR (van thanh)) van.
• Adding a wildcard symbol may retrieve word variants: so sanh hoi dap, nghien cua mot hoc nganh cong hoc tap hai ((van nhan) or (van thanh)) van*.