Perhaps you should try some spelling variations:
dai hoi » dai hoc, dai hai, dai moi
lai roi » lai hoi, loi roi
su phap » su pham, su phat, su phan
cu phap » cua phap, tu phap, ngu phap
va danh » va dinh, va dan, va hanh
danh di » danh du, xanh di, danh dien
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu
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 cac ky nang ((dai hoi) or (lai roi)). tieu ((su phap) OR (cu phap)) xu va danh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((dai hoi) OR (lai roi)). tieu ((su phap) OR (cu phap)) xu va danh di cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((dai hoi) or (lai roi)). tieu ((su phap) OR (cu phap)) xu va danh di cua tu".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((dai hoi) or (lai roi)). tieu ((su phap) OR (cu phap)) xu va danh di cua tu*.