Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vat hanh » vat thanh, van hanh, va hanh
hanh le » thanh le, hanh ve, hanh de
su sac » su sach, su xac
su cac » tu cac, su cao, su can
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
le cua » ly cua
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 sac) OR (su cac)) ky nang x hoi. hieu ((ve cam) or (ve cac)) thuc vat hanh le cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky nang x hoi. hieu ((ve cam) OR (ve cac)) thuc vat hanh le cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su cac)) ky nang x hoi. hieu ((ve cam) or (ve cac)) thuc vat hanh le cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su cac)) ky nang x hoi. hieu ((ve cam) or (ve cac)) thuc vat hanh le cua triet*.