Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep bac
nghiep cay » nghiep chan, nghiep va, nghiep cua
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
van tuan » van quan, van ban, anh tuan
hai van » thai van, ha van, hai tan
xua hai » qua hai, cua hai, xa hai
tuan va » toan va, luan va, quan va
hoc xua » hoc cua, hoc xa, hoc lua
cac thu » cach thuc, cac thoi
thu tap » thu thap, thuc tap, thu tai
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ve cac thu tap, ((nghien cac) OR (nghiep cay)) cong hoc nganh khoa hoc xua hai van tuan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ve cac thu tap, ((nghien cac) OR (nghiep cay)) cong hoc nganh khoa hoc xua hai van tuan va".
• Adding a wildcard symbol may retrieve word variants: ve cac thu tap, ((nghien cac) OR (nghiep cay)) cong hoc nganh khoa hoc xua hai van tuan va*.