Perhaps you should try some spelling variations:
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
doanh khoa » toan khoa
thanh phan » thanh pho, thanh san, thanh toan
hoa doanh » toan doanh, hoa dan
toan phan » toan ban, hoa phan, luan phan
thu hang » thi hang, thuc hanh, thu huong
hang hoc » hang hoa, nang hoc, bang hoc
cong hoa » dong hoa, dong hoc, hang hoa
khoa hoc » hoa hoc
thai van » thi van, thanh van, thai vung
xa thai » ca thai, a thai, da thai
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu hang hoc tap, nghien thu cong hoa doanh khoa hoc xa thai van ((toan phan) OR (thanh phan))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu hang hoc tap, nghien thu cong hoa doanh khoa hoc xa thai van ((toan phan) OR (thanh phan))".
• Adding a wildcard symbol may retrieve word variants: thu hang hoc tap, nghien thu cong hoa doanh khoa hoc xa thai van ((toan phan) OR (thanh phan))*.