Perhaps you should try some spelling variations:
hoa doanh » toan doanh, hoa dan
hoc danh » hoc dan, hoc anh, hoc hanh
khoa hoc » hoa hoc
nhan tai » hang tai, van tai, toan tai
va nhan » van nhan, ca nhan, va phan
hoc xa » hoc ma
tu am » tu nam, tu lam, tu cam
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu am thuc vat, nghien cuu mo ((hoa doanh) or (hoc danh)) khoa hoc xa hoi va nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu am thuc vat, nghien cuu mo ((hoa doanh) OR (hoc danh)) khoa hoc xa hoi va nhan tai.
• Adding a wildcard symbol may retrieve word variants: tu am thuc vat, nghien cuu mo ((hoa doanh) or (hoc danh)) khoa hoc xa hoi va nhan tai*.