Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh cong » nhanh chong, thanh cong
soc nganh » hoc nganh, hoc nhanh, cac nganh
thu sach » tu sach, thuat sach, thu hoach
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
gian dan » gian lang
hoi tai » hoc tai, hoi trac
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) OR (thuoc sach)) hoi tai, nghien cuu long soc nganh cong hoc xa hai van gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (thuoc sach)) hoi tai, nghien cuu long soc nganh cong hoc xa hai van gian dan".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (thuoc sach)) hoi tai, nghien cuu long soc nganh cong hoc xa hai van gian dan*.