Perhaps you should try some spelling variations:
dai hoi » dai hoc, dai hai, dai moi
lai roi » lai hoi, loi roi
tieu su » thieu so
su phap » su pham, su phat, cu phap
phap xu » phap tu, phap thu, phap ngu
danh vi » dinh vi, danh di, danh va
cua te » cua tu
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 xu va ((danh vi) OR (hanh vi)) cua te~.
• 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 xu va ((danh vi) OR (hanh vi)) cua te.
• 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 xu va ((danh vi) OR (hanh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((dai hoi) or (lai roi)). tieu su phap xu va ((danh vi) OR (hanh vi)) cua te*.