Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
khong hoc » khung hoc, thong hoc, khong thuoc
cong coc » cong cuoc, cong co, cong uoc
cong cac » cuong cac, cong tac, cong cau
gian dan » gian lang
anh hoc » sinh hoc, benh hoc, hinh hoc
vo gian » vo giang, va gian, vo gia
tu anh » tu hanh, tu manh, thu anh
hoa vo » hoa co

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu anh hoc tap, nghien thu ((cong coc) OR (cong cac)) nganh khong hoc ma hoa vo gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu anh hoc tap, nghien thu ((cong coc) OR (cong cac)) nganh khong hoc ma hoa vo gian dan".
• Adding a wildcard symbol may retrieve word variants: tu anh hoc tap, nghien thu ((cong coc) OR (cong cac)) nganh khong hoc ma hoa vo gian dan*.