Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
vu sach » su sach, vu khach
hieu va » lieu va, hieu qua
cao luc » bao luc, cao duc, cao suc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tu ang » tu lang, tu anc, tu anh
ang xa » lang xa, mang xa, dang xay
va cao » va cac, va co, va dao
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (vu bach)) tu ang xa hoi. hieu va cao luc va hanh tri cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu bach)) tu ang xa hoi. hieu va cao luc va hanh tri cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (vu bach)) tu ang xa hoi. hieu va cao luc va hanh tri cua tre*.