Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
thu cach » thuc cach, thu canh, tu cach
cach toi » cach thoi, cac toi, cach noi
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
khoa hoc » hoa hoc
toi tap » toi gap, toan tap, tong tap
hoi van » hoi dan, hai van, hoi han
nhan va » nhan tai, nhan dan, nhan tao

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

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