Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
hanh dao » lanh dao, thanh dat, thanh dam
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
dai hoa » dai khoa, dai hoc, dai hoi
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
dao cua » dai cua, day cua, dan cua
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky nang dai hoa. ((hieu ve) or (hieu va)) cam xuc va hanh dao cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky nang dai hoa. ((hieu ve) OR (hieu va)) cam xuc va hanh dao cua tre.
• Adding a wildcard symbol may retrieve word variants: bo sach ky nang dai hoa. ((hieu ve) or (hieu va)) cam xuc va hanh dao cua tre*.