Perhaps you should try some spelling variations:
doanh khoa » toan khoa
vung thanh » vuong thanh, vung nhanh, dung thanh
thanh phan » thanh pho, thanh san, thanh toan
soc doanh » so doanh, hoa doanh, voi doanh
thai vung » thai cong, thai van
sach hoc » sach hoi, mach hoc, sach duoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu long » cuu cong, cuu tong, cuu nang
long soc » lon soc, luong suc, cong so
khoa hoc » hoa hoc
xa thai » ca thai, a thai, da thai
hoc xa » hoc ma

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