Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
cach thoi » cac thoi, cach thuc, cach noi
hoc doanh » hoa doanh, hoc danh, hoc nganh
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
thoi tap » toi tap, hoc tap, thoi dai
khoa hoc » hoa hoc
ve cach » va cach, ve cac, ve canh
hai van » thai van, ha van, hai tan
ma hai » ta hai, va hai, xa hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve cach thoi tap, nghien cua cong ((hoc doanh) or (hoc dan)) khoa hoc ma hai van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve cach thoi tap, nghien cua cong ((hoc doanh) OR (hoc dan)) khoa hoc ma hai van thanh van.
• Adding a wildcard symbol may retrieve word variants: ve cach thoi tap, nghien cua cong ((hoc doanh) or (hoc dan)) khoa hoc ma hai van thanh van*.