Perhaps you should try some spelling variations:
nhanh tuong » nhan tuong, nhanh trong, khanh thuong
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nhanh » hoc nganh, hoc phan
tuong hoc » truong hoc, tuong ho, duong hoc
sach hoi » sach doi, sach moi, cach thoi
van nhan » van phan, van thanh, danh nhan
van tuan » van quan, van ban, anh tuan
su sach » so sach, vu sach
hoi tap » hoi dap, hoi tai, hai tap
mot hoc » mon hoc, mo hoc, mot goc
tap hai » tap bai, tap dai, tai hai

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 hoi tap, nghien cua mot hoc nhanh tuong hoc tap hai ((van nhan) or (van tuan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach hoi tap, nghien cua mot hoc nhanh tuong hoc tap hai ((van nhan) OR (van tuan)) van.
• Adding a wildcard symbol may retrieve word variants: su sach hoi tap, nghien cua mot hoc nhanh tuong hoc tap hai ((van nhan) or (van tuan)) van*.