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
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
mot hoc » mon hoc, mo hoc, mot goc
hoc mai » hoc ma, hoc dai, hoc bai
hoi van » hoi dan, hai van, hoi han
tan san » tai san, tan van, han san

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu cong hoc tap, nghien cua mot hoc doanh khoa hoc mai ((hoi van) or (hoi va)) tan san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu cong hoc tap, nghien cua mot hoc doanh khoa hoc mai ((hoi van) OR (hoi va)) tan san.
• Adding a wildcard symbol may retrieve word variants: thu cong hoc tap, nghien cua mot hoc doanh khoa hoc mai ((hoi van) or (hoi va)) tan san*.