Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
sach hoc » sach hoi, mach hoc, sach duoc
cach hoc » cach thuc, cach thoi, dich hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
hoi van » hoi va, hoi dan, hai van
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) OR (cach hoc)) dai, nghien cuu cong hoc nhanh hoa hoc xa hoi van nhan tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach hoc) OR (cach hoc)) dai, nghien cuu cong hoc nhanh hoa hoc xa hoi van nhan tai".
• Adding a wildcard symbol may retrieve word variants: tu ((sach hoc) OR (cach hoc)) dai, nghien cuu cong hoc nhanh hoa hoc xa hoi van nhan tai*.