Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
nghien thu » nghiep thuc, nghien cuu, nghe thu
doc nhanh » hoc nhanh, doc hanh, doc thanh
chong hoc » chung hoc, chong doc, thong hoc
doc sach » hoc sach, toc sach, nuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cong doc » chong doc, cong coc, cong dac
nhan van » nhan dan, nhan va, phan van
va nhan » van nhan, ca nhan, va phan
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: doc sach hoc tap, ((nghien thu) or (nghiem thuc)) cong doc nhanh chong hoc xa hoi va nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach hoc tap, ((nghien thu) OR (nghiem thuc)) cong doc nhanh chong hoc xa hoi va nhan van.
• Adding a wildcard symbol may retrieve word variants: doc sach hoc tap, ((nghien thu) or (nghiem thuc)) cong doc nhanh chong hoc xa hoi va nhan van*.