Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
xa thanh » va thanh, ha thanh, ta thanh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
va cam » va cham, va cao, va cai

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 ky dang xay hoi. hieu ((va cam) or (va cac)) tuc xa thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xay hoi. hieu ((va cam) OR (va cac)) tuc xa thanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xay hoi. hieu ((va cam) or (va cac)) tuc xa thanh dai cua triet*.