Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
thu sach » tu sach, thuat sach, thuoc sach
sach hoi » sach doi, sach moi, cach thoi
long soc » lon soc, luong suc, lang son
cong hoc » dong hoc, cong hoa, cong coc
van gian » van giang, dan gian, van giao
gian dan » gian lang
hoi tai » hoc tai, hoi trac
cong so » cong san, cong hoa
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 hoi tai, nghien cuu ((long soc) OR (cong so)) nganh cong hoc xa hai van gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach hoi tai, nghien cuu ((long soc) OR (cong so)) nganh cong hoc xa hai van gian dan".
• Adding a wildcard symbol may retrieve word variants: thu sach hoi tai, nghien cuu ((long soc) OR (cong so)) nganh cong hoc xa hai van gian dan*.