Perhaps you should try some spelling variations:
doanh khoa » toan khoa
soc doanh » so doanh, hoa doanh, voi doanh
thu sach » thuat sach, thuoc sach, thu hoach
cuu long » cuu cong, cuu tong, cuu nang
long soc » lon soc, luong suc, cong so
khoa hoc » hoa hoc
van tuan » van quan, van ban, anh tuan
tuan van » luan van, tran van, tan van
tu sach » su sach, te sach, tu cach
thi van » thi lan, thi hanh, thi nang
hoc xa » hoc ma
xa thi » xa thai, ha thi, ta thi

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 (tu sach)) hoc tap, nghien cuu long soc doanh khoa hoc xa thi van tuan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) hoc tap, nghien cuu long soc doanh khoa hoc xa thi van tuan van".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) hoc tap, nghien cuu long soc doanh khoa hoc xa thi van tuan van*.