Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
doanh khoa » toan khoa
hut sinh » huy sinh, hut binh, thuat sinh
co doanh » cho doanh, cao doanh, so doanh
dan nhan » danh nhan, dan chan, van nhan
nhan van » nhan dan, nhan va, phan van
cong co » dong co, cong cu, cong so
hoi dan » hoa dan, hoc dan, hoi dap

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

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