Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
sach hoc » cach hoc, sach hoi, mach hoc
cong cac » cuong cac, cong tac, trong cac
cong cau » cong cu, cong chuc, thong cau
tu sach » thu sach, su sach, te sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi van » hoi va, hoi dan, hai van

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 mon hoc nhanh ((cong cac) OR (cong cau)) xa hoi van thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach hoc tap, nghien cuu mon hoc nhanh ((cong cac) OR (cong cau)) xa hoi van thanh van".
• Adding a wildcard symbol may retrieve word variants: tu sach hoc tap, nghien cuu mon hoc nhanh ((cong cac) OR (cong cau)) xa hoi van thanh van*.