Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nganh khoa » nganh hoa, doanh khoa, anh khoa
thu mach » thu sach, thuat mach, thu hoach
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
van nhan » van phan, van thanh, danh nhan
nhan van » nhan dan, nhan va, phan van
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu mach hoc tap, nghien cuu dong co ((nganh khoa) OR (nganh khong)) hoc xa hai van nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu mach hoc tap, nghien cuu dong co ((nganh khoa) OR (nganh khong)) hoc xa hai van nhan van".
• Adding a wildcard symbol may retrieve word variants: thu mach hoc tap, nghien cuu dong co ((nganh khoa) OR (nganh khong)) hoc xa hai van nhan van*.