Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
cach thoi » cac thoi, cach thuc, cach noi
danh nhan » doanh nhan, thanh nhan, benh nhan
thoi tap » toi tap, hoc tap, thoi dai
cuu long » cuu cong, cuu tong, cuu nang
long soc » lon soc, luong suc, cong so
soc danh » hoc danh, so danh, soc dan
danh hoa » thanh hoa, khanh hoa, nganh hoa
te cach » ve cach, te sach, tu cach
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: te cach thoi tap, nghien cuu long soc danh hoa hoc xa hoi ((danh nhan) or (doanh thanh)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cach thoi tap, nghien cuu long soc danh hoa hoc xa hoi ((danh nhan) OR (doanh thanh)) dau.
• Adding a wildcard symbol may retrieve word variants: te cach thoi tap, nghien cuu long soc danh hoa hoc xa hoi ((danh nhan) or (doanh thanh)) dau*.