Perhaps you should try some spelling variations:
cham duc » cham soc, pham duy, phan duc
danh hoa » thanh hoa, khanh hoa, nganh hoa
hoa chat » hop chat, hoa phan
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
chat tu » nhat tu, chai tu, chay tu
x hoi » xa hoi, o hoi, x ho
o hai » co hai, so hai, o lai

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

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