Perhaps you should try some spelling variations:
nhan khoa » nha khoa, khuan khoa, toan khoa
cach thoi » cac thoi, cach thuc, cach noi
nhan tao » nhan tai, nhan dan
khoa hoc » hoa hoc
hoc nhan » hoc nhanh, nhoc nhan, hoc phan
tong hoc » tuong hoc, thong hoc, trong hoc
cuu tong » cuu cong, cuu tinh, huu tung
thoi tap » toi tap, hoc tap, thoi dai
ha danh » han danh, hoa danh, ha anh
nhan va » nhan tai, nhan dan, phan van
te cach » ve cach, te sach, tu cach
hoc xa » hoc ma
xa ha » xa hoa, xa hai, la ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: te cach thoi tap, nghien cuu tong hoc nhan khoa hoc xa ha danh ((nhan va) OR (nhan tao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cach thoi tap, nghien cuu tong hoc nhan khoa hoc xa ha danh ((nhan va) OR (nhan tao))".
• Adding a wildcard symbol may retrieve word variants: te cach thoi tap, nghien cuu tong hoc nhan khoa hoc xa ha danh ((nhan va) OR (nhan tao))*.