Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc doanh » hoa doanh, hoc danh, hoc dan
thu bach » thi bach, thu sach, thu hoach
cam nhan » ca nhan, cam chan, cam nang
nhan van » nhan dan, nhan va, phan van
mai tap » bai tap, mai tat, mai tan
hoi cam » hoi cham, hoi cac, hoi cau
cua co » cua bo, cua cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu bach mai tap, nghien cua co hoc doanh ((khoa hoc) OR (hoa hoc)) xa hoi cam nhan van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu bach mai tap, nghien cua co hoc doanh ((khoa hoc) OR (hoa hoc)) xa hoi cam nhan van".
• Adding a wildcard symbol may retrieve word variants: thu bach mai tap, nghien cua co hoc doanh ((khoa hoc) OR (hoa hoc)) xa hoi cam nhan van*.