Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
dang van » hoang van, hang va
te sach » toc sach
cau xuc » cau luc, cau truc, chat xuc
tai cua » thai cua, tai cuc, tri cua
hieu va » lieu va, hieu qua
van hoc » van hoa
ky dang » ky nang, ky danh
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: ((te sach) or (thuoc sach)) ky dang van hoc. hieu va ((cau xuc) or (cam xuc)) van hanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thuoc sach)) ky dang van hoc. hieu va ((cau xuc) OR (cam xuc)) van hanh tai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thuoc sach)) ky dang van hoc. hieu va ((cau xuc) or (cam xuc)) van hanh tai cua tre*.