Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tan hanh » tan thanh, tang hanh, toan hanh
hanh hoi » hanh thoi, hanh noi, hanh hoa
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
dan tao » dao tao, dan tay, dan tho
tao hoi » tao khoi, tao boi, tay hoi
hoi cua » hoi chuc
ky dan » ky dang, ky danh, ke dan
ve cac » vien cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dan tao hoi. hieu ((ve cac) or (va cac)) duc tan hanh hoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dan tao hoi. hieu ((ve cac) OR (va cac)) duc tan hanh hoi cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky dan tao hoi. hieu ((ve cac) or (va cac)) duc tan hanh hoi cua triet*.