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
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
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
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi

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) OR (mai hoi)) 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) OR (mai hoi)) ban thanh van".
• Adding a wildcard symbol may retrieve word variants: vu cach thoi tap, nghien cua cong coc doanh khoa hoc ((ma hoi) OR (mai hoi)) ban thanh van*.