Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
cong hoc » dong hoc, cong hoa, cong coc
khoa hoc » hoa hoc
tuan san » luan san, thanh san, thuat san
mot hoc » mon hoc, mo hoc, mot goc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
hoi van » hoi va, hoi dan, hai van
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 nganh khoa hoc mai hoi van ((tuan san) OR (tan san))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu cong hoc tap, nghien cua mot hoc nganh khoa hoc mai hoi van ((tuan san) OR (tan san))".
• Adding a wildcard symbol may retrieve word variants: thu cong hoc tap, nghien cua mot hoc nganh khoa hoc mai hoi van ((tuan san) OR (tan san))*.