Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
ve chao » ve chat, ve cham, ve cho
va danh » va dinh, va dan, va hanh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai
xu va » xu van, tu va, su va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((x hoi) or (o hoi)). hieu ve chao xu va danh ((hoi cua) or (hoi chuc)) tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((x hoi) OR (o hoi)). hieu ve chao xu va danh ((hoi cua) OR (hoi chuc)) tu.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) or (o hoi)). hieu ve chao xu va danh ((hoi cua) or (hoi chuc)) tu*.