Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
trinh hoa » trinh do, trinh han
hoc nganh » hoc nhanh
tu trinh » tu tinh, tieu trinh, qua trinh
hoa than » khoa than, hoa thanh, hoa thuan
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
va nhan » ca nhan, va phan, va nha
mo hoc » mon hoc, co hoc
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu trinh hoa than, nghien cuu mo hoc nganh khoa hoc ma hoi ((va nhan) or (van nhan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu trinh hoa than, nghien cuu mo hoc nganh khoa hoc ma hoi ((va nhan) OR (van nhan)) van.
• Adding a wildcard symbol may retrieve word variants: tu trinh hoa than, nghien cuu mo hoc nganh khoa hoc ma hoi ((va nhan) or (van nhan)) van*.