Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ve cap » le cap, ve cai, ve cau
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ((ve cap) OR (ve cac)) cuu ((va thanh) or (ban thanh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu ((ve cap) OR (ve cac)) cuu ((va thanh) OR (ban thanh)) vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu ((ve cap) OR (ve cac)) cuu ((va thanh) or (ban thanh)) vai cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu ((ve cap) OR (ve cac)) cuu ((va thanh) or (ban thanh)) vai cua triet*.