Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
coc nganh » hoc nganh, cac nganh, chuc nganh
cuu cong » cua cong, thu cong, cac cong
cong coc » cong cuoc, cong cac, cong co
van gian » van giang, dan gian, van giao
gian dan » gian lang
bac bai » cac bai, bac dai, bac tai
hoi van » hoi va, hoi dan, hai van
tu bac » tu ban, tu cac, tu bat

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu bac bai tap, nghien cuu cong coc nganh khung ((hoc xa) OR (hoc ma)) hoi van gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu bac bai tap, nghien cuu cong coc nganh khung ((hoc xa) OR (hoc ma)) hoi van gian dan".
• Adding a wildcard symbol may retrieve word variants: tu bac bai tap, nghien cuu cong coc nganh khung ((hoc xa) OR (hoc ma)) hoi van gian dan*.