Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
hoc nganh » hoc nhanh
thu hinh » thi hinh, thu minh, thu kinh
hinh hoc » sinh hoc, tin hoc, benh hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
lai hoi » dai hoi, lai hoa, lai roi
va nhan » van nhan, ca nhan, va phan
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 hinh hoc tap, nghien cuu cong hoc nganh khong thuoc ((xa hoi) or (lai hoi)) va nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu hinh hoc tap, nghien cuu cong hoc nganh khong thuoc ((xa hoi) OR (lai hoi)) va nhan va.
• Adding a wildcard symbol may retrieve word variants: thu hinh hoc tap, nghien cuu cong hoc nganh khong thuoc ((xa hoi) or (lai hoi)) va nhan va*.