Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
thu sach » tu sach, thuat sach, thuoc sach
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
hieu van » hieu va, thien van, lieu va
xuc manh » suc manh, duc manh, duc minh
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach thu nang xa hoi. ((hieu ve) or (hieu van)) cam xuc manh hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach thu nang xa hoi. ((hieu ve) OR (hieu van)) cam xuc manh hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach thu nang xa hoi. ((hieu ve) or (hieu van)) cam xuc manh hanh vai cua tre*.