Perhaps you should try some spelling variations:
nganh khong » nhanh chong, nganh nong, nganh khoa
nganh cong » nhanh chong, thanh cong
thu sach » tu sach, thuat sach, thuoc sach
sach doi » sach hoi, sach moi, sach dao
cuu long » cuu cong, cuu tong, cuu nang
long hoc » dong hoc, long soc, long thuoc
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
doi tac » dong tac
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 sach doi tac, nghien cuu long hoc ((nganh khong) OR (nganh cong)) hoc xa hai van nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach doi tac, nghien cuu long hoc ((nganh khong) OR (nganh cong)) hoc xa hai van nhan tai".
• Adding a wildcard symbol may retrieve word variants: thu sach doi tac, nghien cuu long hoc ((nganh khong) OR (nganh cong)) hoc xa hai van nhan tai*.