Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh lai » hanh lam, hanh tai, thanh lap
sach ky » sach y, sach ty, sach kem
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
sac ky » cac ky, sai ky
ve 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: tu ((sach ky) or (sac ky)) nang x hoi. hieu ((ve cac) OR (va cac)) xuc va hanh lai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang x hoi. hieu ((ve cac) OR (va cac)) xuc va hanh lai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sac ky)) nang x hoi. hieu ((ve cac) OR (va cac)) xuc va hanh lai cua viet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sac ky)) nang x hoi. hieu ((ve cac) OR (va cac)) xuc va hanh lai cua viet*.