Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
nhan thuc » nhan luc, dan thuc, toan thuc
thu sach » thuat sach, thuoc sach, thu hoach
thanh vi » hanh vi, thanh va, thanh ve
vi nhan » li nhan, va nhan, vi phan
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
tu sach » su sach, te sach, tu cach
mai hoi » mai khoi, dai hoi, mai doi
lai hoi » dai hoi, lai hoa, lai roi
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, v nang

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 sach)) y nang ((mai hoi) OR (lai hoi)). hieu ve cam xuc van thanh vi nhan thuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang ((mai hoi) OR (lai hoi)). hieu ve cam xuc van thanh vi nhan thuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) y nang ((mai hoi) OR (lai hoi)). hieu ve cam xuc van thanh vi nhan thuc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang ((mai hoi) OR (lai hoi)). hieu ve cam xuc van thanh vi nhan thuc*.