Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
anh vai » anh va, anh bai, anh van
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
dau xuc » dau xac, dau xua, dau nuoc
tu sach » te sach, tu cach, vu sach
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
va dau » va dao
v nang » va nang, vu nang, van nang

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) OR (thu sach))) or (su sach)) v nang xa hoi. hieu va dau xuc van anh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (thu sach))) OR (su sach)) v nang xa hoi. hieu va dau xuc van anh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((tu sach) OR (thu sach))) or (su sach)) v nang xa hoi. hieu va dau xuc van anh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) OR (thu sach))) or (su sach)) v nang xa hoi. hieu va dau xuc van anh vai cua tre*.