Perhaps you should try some spelling variations:
nganh khong » nhanh chong, nganh nong, nganh khoa
nghien cac » nghiep cach, nghien cuu, nghiep cay
nganh cong » nhanh chong, thanh cong
tong khoi » xong khoi, tuong khoa, thong khoa
sach hoc » cach hoc, sach hoi, mach hoc
cac tong » cac tuong, cac cong, bac tong
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
tu sach » thu sach, su sach, te sach
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: tu sach hoc tap, nghien cac tong khoi ((nganh khong) or (nganh cong)) hoc xa hai van nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cac tong khoi ((nganh khong) OR (nganh cong)) hoc xa hai van nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cac tong khoi ((nganh khong) or (nganh cong)) hoc xa hai van nhan dan*.