Perhaps you should try some spelling variations:
hoc doanh » hoa doanh, hoc danh, hoc dan
thu tich » chu tich, chu thich, thue tinh
tich hoc » tinh hoc, dich hoc, tich hop
cuu cong » cua cong, thu cong, cac cong
khoa hoc » hoa hoc
phan van » pham van, thanh van, luan van
va phan » van phan, va phat, va phap
ma hoi » mai hoi, xa hoi, ma hoa
toan » tran

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu tich hoc tap, nghien cuu cong ((hoc doanh) or (toan doanh)) khoa hoc ma hoi va phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu tich hoc tap, nghien cuu cong ((hoc doanh) OR (toan doanh)) khoa hoc ma hoi va phan van.
• Adding a wildcard symbol may retrieve word variants: thu tich hoc tap, nghien cuu cong ((hoc doanh) or (toan doanh)) khoa hoc ma hoi va phan van*.