Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
canh thin » danh thin, cach thien, manh thinh
khoa hoc » hoa hoc
cong hoc » dong hoc, cong hoa, cong coc
canh toi » hanh thoi, hanh tot, van toi
thanh va » thanh van, hanh va, thanh ha
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((canh toi) OR (canh thin)) tap, nghien cua cong hoc nganh khoa hoc xa hai van thanh va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((canh toi) OR (canh thin)) tap, nghien cua cong hoc nganh khoa hoc xa hai van thanh va".
• Adding a wildcard symbol may retrieve word variants: thu ((canh toi) OR (canh thin)) tap, nghien cua cong hoc nganh khoa hoc xa hai van thanh va*.