Perhaps you should try some spelling variations:
sach thuc » cach thuc, sach thu, sach thue
toc sach » hoc sach, doc sach, thuoc sach
hieu cao » chieu cao, hieu cac, hieu ca
chat xuc » chat huu, cam xuc, chao xu
van hanh » van thanh, ban hanh, van ban
dieu cua » dieu tra
hanh xa » hanh va, hanh ma, hanh xu
van anh » van thanh, tuan anh, van minh
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: toc sach thuc hanh xa hoi. hieu cao chat xuc ((van hanh) or (van anh)) dieu cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thuc hanh xa hoi. hieu cao chat xuc ((van hanh) OR (van anh)) dieu cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach thuc hanh xa hoi. hieu cao chat xuc ((van hanh) or (van anh)) dieu cua tre*.