Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, ban hanh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve can » ve canh, ve cac, ve ban
vi cau » va cau, ve cau, di cau
x hoi » xa hoi, o hoi, x ho
bo va » bao va, do va, so va

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 ky nang x hoi. hieu ve can bo va hanh vi cau tren~.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang x hoi. hieu ve can bo va hanh vi cau tren*.