Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
khong hoc » khung hoc, thong hoc, khong thuoc
toc sach » hoc sach, doc sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
cuu nang » chuc nang, cam nang, cuu van
nhan dan » phan dau, gian dan, nhan tai
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach hoc tap, nghien ((cuu dong) or (cuu nang)) hoc nganh khong hoc xa hoi ca nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach hoc tap, nghien ((cuu dong) OR (cuu nang)) hoc nganh khong hoc xa hoi ca nhan dan.
• Adding a wildcard symbol may retrieve word variants: toc sach hoc tap, nghien ((cuu dong) or (cuu nang)) hoc nganh khong hoc xa hoi ca nhan dan*.