Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep cay
cach thoi » cac thoi, cach thuc, cach noi
nganh hoa » thanh hoa, khanh hoa, danh hoa
thu cach » thuc cach, thu canh, tu cach
thoi tap » toi tap, hoc tap, thoi dai
cac cong » cua cong
cong hoc » dong hoc, cong hoa, cong coc
van gian » van giang, dan gian, van giao
gian dan » gian lang
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 cach thoi tap, nghien cac cong hoc ((danh cho) or (nganh hoa)) hoc xa hai van gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cach thoi tap, nghien cac cong hoc ((danh cho) OR (nganh hoa)) hoc xa hai van gian dan.
• Adding a wildcard symbol may retrieve word variants: thu cach thoi tap, nghien cac cong hoc ((danh cho) or (nganh hoa)) hoc xa hai van gian dan*.