Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh va, hanh tai, hanh van
sach cu » sach cua, sach tu, sach uu
thuc va » thuc vat, thuc dan, thuc day
co thuc » do thuc, co thua, mo thuc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
cu lang » cua lang, tu lang, xu lang
cua tre » cua te, cuu tre, cua triet
va co » vo co

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach cu lang xa hoi. hieu va co thuc va ((((hanh vai) OR (hanh vi))) or (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach cu lang xa hoi. hieu va co thuc va ((((hanh vai) OR (hanh vi))) OR (thanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach cu lang xa hoi. hieu va co thuc va ((((hanh vai) OR (hanh vi))) or (thanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach cu lang xa hoi. hieu va co thuc va ((((hanh vai) OR (hanh vi))) or (thanh tai)) cua tre*.