Perhaps you should try some spelling variations:
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
nhanh thong » nhanh thang, nhan thong, nhanh hong
nhanh chong » thanh cong, khanh phong
thuc cong » thuoc cong, thu cong, chuc cong
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
nhan dan » phan dau, gian dan, nhan tai
su sach » so sach, vu sach
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: su sach hoc tap, nghiem thuc cong hoc ((nhanh thong) OR (nhanh chong)) hoc xa hoi ca nhan dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach hoc tap, nghiem thuc cong hoc ((nhanh thong) OR (nhanh chong)) hoc xa hoi ca nhan dan".
• Adding a wildcard symbol may retrieve word variants: su sach hoc tap, nghiem thuc cong hoc ((nhanh thong) OR (nhanh chong)) hoc xa hoi ca nhan dan*.