Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
hoc sach » hoc sinh, hoc cac, hoc anh
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
doi tap » doi dap, doi tai, doi tan
doi tac » dong tac
hoi van » hoi va, hoi dan, hai van
mo hoc » mon hoc, co hoc
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: hoc sach ((doi tap) or (doi tac)), nghien cuu mo hoc nganh khoa hoc xa hoi van nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((doi tap) OR (doi tac)), nghien cuu mo hoc nganh khoa hoc xa hoi van nhan tai.
• Adding a wildcard symbol may retrieve word variants: hoc sach ((doi tap) or (doi tac)), nghien cuu mo hoc nganh khoa hoc xa hoi van nhan tai*.