Perhaps you should try some spelling variations:
nghien thuy » nguyen thuy, nghiem thuc, nghiep thuc
thuy duong » huy dong
nganh khoa » nganh hoa, nganh khong, doanh khoa
duong hoi » duong loi, dong hoi, duong noi
hoi nganh » khoi nganh, hoc nganh, moi nganh
khoa hoc » hoa hoc
van phan » van phong, van thanh, luan phan
phan van » pham van, thanh van, luan van
su cach » su sach, tu cach, cuu cach
hoi van » hoi va, hoi dan, hai van
su cac » tu cac, su cao, su can
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cach) OR (su cac)) hoc tap, nghien thuy duong hoi nganh khoa hoc xa hoi van phan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cach) OR (su cac)) hoc tap, nghien thuy duong hoi nganh khoa hoc xa hoi van phan van".
• Adding a wildcard symbol may retrieve word variants: ((su cach) OR (su cac)) hoc tap, nghien thuy duong hoi nganh khoa hoc xa hoi van phan van*.