Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
manh hanh » xanh hanh, danh thanh, minh thanh
hieu van » thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
xuc manh » suc manh, duc manh, duc minh
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
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: thuoc sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cam xuc manh hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) OR (hieu van)) cam xuc manh hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cam xuc manh hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach tu nang xa hoi. ((((hieu ve) OR (hieu va))) or (hieu van)) cam xuc manh hanh vai cua tre*.