Perhaps you should try some spelling variations:
hanh vit » hanh vi, danh viet, hanh tiet
van hanh » van thanh, ban hanh, van anh
va cham » va chat, va tham
xuc van » duc van, luc van, vuc van
ca viet » va viet, co viet, hoa viet
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
vit ca » viet ca, viet cau
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: thuoc ((sac ky) or (sach y)) nang x hoi. hieu ((va cham) or (ve cac)) xuc van hanh vit ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sac ky) OR (sach y)) nang x hoi. hieu ((va cham) OR (ve cac)) xuc van hanh vit ca viet.
• Adding a wildcard symbol may retrieve word variants: thuoc ((sac ky) or (sach y)) nang x hoi. hieu ((va cham) or (ve cac)) xuc van hanh vit ca viet*.