Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh khoa » nganh khong, doanh khoa, anh khoa
nganh hoa » thanh hoa, khanh hoa, danh hoa
van thanh » ban thanh, van tuan
thanh tai » thanh hai, thanh toan, doanh tai
thu cach » thuc cach, thu canh, tu cach
cach hoi » cach thoi, cach noi, cach hoc
mot hoc » mon hoc, mo hoc, mot goc
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: thu cach hoi dap, nghien cua mot hoc ((nganh khoa) or (nganh hoa)) hoc ma hai van thanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cach hoi dap, nghien cua mot hoc ((nganh khoa) OR (nganh hoa)) hoc ma hai van thanh tai.
• Adding a wildcard symbol may retrieve word variants: thu cach hoi dap, nghien cua mot hoc ((nganh khoa) or (nganh hoa)) hoc ma hai van thanh tai*.