Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
su sac » su sach, su xac
su cac » tu cac, su cao, su can
xuc va » duc va, tuc va, luc va
tai va » thai va, mai va, tri va
x hoi » xa hoi, o hoi, x ho
thiet » thieu

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 cham) or (va phat)) xuc va hanh tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky nang x hoi. hieu ((ve cham) OR (va phat)) xuc va hanh tai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) OR (su cac)) ky nang x hoi. hieu ((ve cham) or (va phat)) xuc va hanh tai va thiet".
• Adding a wildcard symbol may retrieve word variants: ((su sac) OR (su cac)) ky nang x hoi. hieu ((ve cham) or (va phat)) xuc va hanh tai va thiet*.