Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh vai » hanh vi, hanh va, hanh tai
sach le » cach le, sach de, sach lo
le lang » le tang, le dang, le xang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, duc va
cua te » cua tu

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 le lang xa hoi. hieu va cam ((tuc va) OR (tuc xa)) hanh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach le lang xa hoi. hieu va cam ((tuc va) OR (tuc xa)) hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach le lang xa hoi. hieu va cam ((tuc va) OR (tuc xa)) hanh vai cua te*.