Perhaps you should try some spelling variations:
nganh khong » nganh cong, nganh nong, nganh khoa
nhanh chong » thanh cong, khanh phong
nghien cac » nghiep cach, nghien cuu, nghiep cay
cong khoi » cong khi, cong nhoi, tong khoi
chau nhan » chan nhan, chau phan, ca nhan
sach hoc » cach hoc, sach hoi, mach hoc
cac cong » cua cong
hoi chau » hoi chu, hoi cham, hai chau
tu sach » thu sach, su sach, te sach
nhan va » nhan tai, nhan dan, nhan tao
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach hoc tap, nghien cac cong khoi ((nganh khong) OR (nhanh chong)) hoc xa hoi chau nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cac cong khoi ((nganh khong) OR (nhanh chong)) hoc xa hoi chau nhan va*".