Perhaps you should try some spelling variations:
nganh khung » nganh khong, nhanh hung
hoc nganh » hoc nhanh
khung hoc » chung hoc, nhung hoc, thuong hoc
sach hoc » cach hoc, sach hoi, mach hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
hoa danh » hoa doanh, hoa dan, hop danh
nhan tai » hang tai, van tai, toan tai
su sach » so sach, vu sach
nhan va » nhan dan, nhan tao, phan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach hoc tap, nghien cuu cong hoc nganh khung hoc ma hoa danh ((nhan va) OR (nhan tai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoc tap, nghien cuu cong hoc nganh khung hoc ma hoa danh ((nhan va) OR (nhan tai))".
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghien cuu cong hoc nganh khung hoc ma hoa danh ((nhan va) OR (nhan tai))*.