Perhaps you should try some spelling variations:
nhanh thanh » phan thanh, nhanh tinh
nghien cua » nghien cuu, nghiep cua, nghiep vua
luc nhanh » luc nhan, luc nganh, luc canh
thanh hoc » thanh hoa, than hoc, thanh ho
hoi thanh » hoc thanh, hai thanh, hoa thanh
sach hoc » cach hoc, sach hoi, mach hoc
cong luc » dong luc, cong suc, cong duc
nhan dan » phan dau, gian dan
nhan tai » hang tai, van tai, toan tai
tu sach » thu sach, su sach, te sach
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 cua cong luc nhanh thanh hoc xa hoi thanh ((nhan dan) or (nhan tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach hoc tap, nghien cua cong luc nhanh thanh hoc xa hoi thanh ((nhan dan) OR (nhan tai)).
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cua cong luc nhanh thanh hoc xa hoi thanh ((nhan dan) or (nhan tai))*.