Perhaps you should try some spelling variations:
hang doanh » hanh doanh, nhung doanh, van doanh
doanh khoa » toan khoa
thanh van » thanh san, thanh toan, thanh phan
thu sach » tu sach, thuat sach, thuoc sach
sach hoi » sach doi, sach moi, cach thoi
tao hang » tao zhang, tao khang, tao bang
khoa hoc » hoa hoc
hoi tai » hoc tai, hoi trac
cuu tao » cau tao, cuu dao, cuu tac
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 hoi tai, nghien cuu tao hang doanh khoa hoc xa hoi va ((luan van) or (thanh van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach hoi tai, nghien cuu tao hang doanh khoa hoc xa hoi va ((luan van) OR (thanh van)).
• Adding a wildcard symbol may retrieve word variants: thu sach hoi tai, nghien cuu tao hang doanh khoa hoc xa hoi va ((luan van) or (thanh van))*.