Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
nganh khoa » nganh hoa, nganh khong, doanh khoa
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
thoi tap » toi tap, hoc tap, thoi dai
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
nhan van » nhan dan, nhan va, phan van
tu cach » tu cac
hoi van » hoi dan, hai van, hoi han

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thoi tap, nghien thu cong hoc nganh khoa hoc ma ((hoi van) OR (hoi va)) nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach thoi tap, nghien thu cong hoc nganh khoa hoc ma ((hoi van) OR (hoi va)) nhan van".
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien thu cong hoc nganh khoa hoc ma ((hoi van) OR (hoi va)) nhan van*.