Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
coc nganh » hoc nganh, cac nganh, chuc nganh
khong hoc » khung hoc, thong hoc, khong thuoc
cong coc » cong cuoc, cong cac, cong co
gian dan » gian lang
tu manh » tu minh, vu manh, tung manh
tu hanh » du hanh, lu hanh, thuc hanh
va gian » va gianh, van gian, va giai
hoa va » hoa van, hoa xa, hoa vo

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu manh) or (tu hanh)) hoc tap, nghien thu cong coc nganh khong hoc ma hoa va gian dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu manh) OR (tu hanh)) hoc tap, nghien thu cong coc nganh khong hoc ma hoa va gian dan.
• Adding a wildcard symbol may retrieve word variants: ((tu manh) or (tu hanh)) hoc tap, nghien thu cong coc nganh khong hoc ma hoa va gian dan*.