Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nang lai » nang tai, mang lai, nang cai
hanh vai » hanh vi, hanh tai, hanh van
hang tai » hang va, dung tai
cac luc » cau luc, coc luc, cac nuoc
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
ve cac » va cac, vien cac

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 y ((nang lai) or (hang tai)) hoa. hieu ve cac luc va ((hanh vai) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((nang lai) OR (hang tai)) hoa. hieu ve cac luc va ((hanh vai) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sach y ((nang lai) or (hang tai)) hoa. hieu ve cac luc va ((hanh vai) or (hanh va)) cua tre*.