Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
nhanh thong » nhanh chong, nhan thong, nhanh hong
sach hoc » cach hoc, sach hoi, mach hoc
phap dan » phap day, phap han, phap van
tu sach » thu sach, su sach, te sach
va phap » va phat, ban phap
mo hoc » mon hoc, co hoc
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 cuu mo hoc ((nhanh thong) or (nhanh thang)) hoc xa hoi va phap dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cuu mo hoc ((nhanh thong) OR (nhanh thang)) hoc xa hoi va phap dan.
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu mo hoc ((nhanh thong) or (nhanh thang)) hoc xa hoi va phap dan*.