Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nganh khoa » nganh hoa, doanh khoa, anh khoa
cong hoc » dong hoc, cong hoa, cong coc
van tuan » van quan, van ban, anh tuan
tuan san » luan san, tan san, thanh san
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
hoi van » hoi va, hoi dan, hai van

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 cuu mon hoc ((nganh khoa) OR (nganh khong)) hoc mai hoi van tuan san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu cong hoc tap, nghien cuu mon hoc ((nganh khoa) OR (nganh khong)) hoc mai hoi van tuan san".
• Adding a wildcard symbol may retrieve word variants: thu cong hoc tap, nghien cuu mon hoc ((nganh khoa) OR (nganh khong)) hoc mai hoi van tuan san*.