Perhaps you should try some spelling variations:
hanh dao » lanh dao, thanh dat, thanh dam
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
xuc va » duc va, tuc va, luc va
cua te » cua tu
x hoi » xa hoi, o hoi, 5 hoi

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 ly nang ((x hoi) or (x ho)). hieu van cam xuc va hanh dao ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang ((x hoi) OR (x ho)). hieu van cam xuc va hanh dao ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang ((x hoi) or (x ho)). hieu van cam xuc va hanh dao ((cua tre) or (cua te))*.