Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
doanh khoa » toan khoa
hoc doanh » hoa doanh, hoc danh, hoc dan
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
thu anh » thuy anh, thu canh, thu oanh
anh tho » anh khoa, anh thuc
tho dap » tho dan, cho dap, thi dap
mot hoc » mon hoc, mo hoc, mot goc
hoi van » hoi va, hoi dan, hai van

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu anh tho dap, nghien cua mot hoc doanh khoa ((hoc xa) or (hoc ma)) hoi van nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu anh tho dap, nghien cua mot hoc doanh khoa ((hoc xa) OR (hoc ma)) hoi van nhan dan.
• Adding a wildcard symbol may retrieve word variants: thu anh tho dap, nghien cua mot hoc doanh khoa ((hoc xa) or (hoc ma)) hoi van nhan dan*.