Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu hien » bieu hien, dieu hien, chieu chien
cua viet » ca viet, hoa viet, cua vat
thanh vi » hanh vi, thanh va, thanh ve
thu sach » thuat sach, thuoc sach, thu hoach
nang dai » nang dau, nang tai, lang dai
dai hoi » dai hoc, dai hai, dai moi
cac xuc » cac nuoc, chat xuc, cac cuoc
tu sach » su sach, te sach, tu cach
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 sach)) y nang dai hoi. hieu hien ((cac xuc) or (cam xuc)) ban thanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang dai hoi. hieu hien ((cac xuc) OR (cam xuc)) ban thanh vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y nang dai hoi. hieu hien ((cac xuc) or (cam xuc)) ban thanh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y nang dai hoi. hieu hien ((cac xuc) or (cam xuc)) ban thanh vi cua viet*.