Perhaps you should try some spelling variations:
doanh khoa » toan khoa
khanh hoa » thanh hoa, hang hoa
cach hoc » cach thuc, cach thoi, dich hoc
van gian » van giang, dan gian, van giao
gian dan » gian lang
tu cach » tu cac
hoc dai » hoc dan
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
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: tu cach hoc dai, nghien cuu mot hoc ((doanh khoa) or (khanh hoa)) hoc xa hai van gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc dai, nghien cuu mot hoc ((doanh khoa) OR (khanh hoa)) hoc xa hai van gian dan*.