Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
soc nganh » hoc nganh, hoc nhanh, cac nganh
sach hoi » sach doi, cach thoi, hoach hoi
van gian » van giang, dan gian, van giao
cong hoc » dong hoc, cong hoa, cong coc
long soc » lon soc, luong suc, cong so
cuu long » cuu cong, cuu tong, cuu nang
sach moi » sach doi, bach mai, sach bai
gian dan » gian lang
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach hoi) OR (sach moi)) tai, nghien cuu long soc nganh cong hoc xa hai van gian dan~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach hoi) OR (sach moi)) tai, nghien cuu long soc nganh cong hoc xa hai van gian dan*.