Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua quoc » cua nuoc, cua thuoc
thanh vi » hanh vi, thanh va, thanh ve
nang lai » nang tai, mang lai, nang cai
cham xuc » cam xuc, chat xuc, cham soc
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
lai hoi » dai hoi, lai hoa, lai roi
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu hoach)) y nang lai hoi. ((hieu ve) OR (hieu va)) cham xuc van thanh vi cua quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) y nang lai hoi. ((hieu ve) OR (hieu va)) cham xuc van thanh vi cua quoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu hoach)) y nang lai hoi. ((hieu ve) OR (hieu va)) cham xuc van thanh vi cua quoc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) y nang lai hoi. ((hieu ve) OR (hieu va)) cham xuc van thanh vi cua quoc*.