Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
cach thoi » cac thoi, cach thuc, cach noi
coc doanh » cac doanh, hoa doanh, cho doanh
van thanh » van tuan
ban thanh » ban hanh, ban hang
thoi tap » toi tap, hoc tap, thoi dai
cong coc » cong cuoc, cong cac, cong co
khoa hoc » hoa hoc
vu cach » va cach, ve cach, vu bach
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu cach thoi tap, nghien cua cong coc doanh khoa hoc ma hoi ((van thanh) OR (ban thanh)) van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu cach thoi tap, nghien cua cong coc doanh khoa hoc ma hoi ((van thanh) OR (ban thanh)) van".
• Adding a wildcard symbol may retrieve word variants: vu cach thoi tap, nghien cua cong coc doanh khoa hoc ma hoi ((van thanh) OR (ban thanh)) van*.