Perhaps you should try some spelling variations:
doc sach » toc sach, nuoc sach, dac sac
chat xuc » chat huu, cam xuc, chao xu
cac cuoc » cac nuoc, ca cuoc, cac quoc
hoc sach » hoc sinh, hoc cac, hoc anh
hieu va » lieu va, hieu qua
van han » van hanh, van phan, van nhan
han tai » hang tai, nhan tai, van tai
tai cua » thai cua, tai cuc, tri cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) or (hoc sach)) ky nang x hoi. hieu va ((cac cuoc) or (chat xuc)) van han tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (hoc sach)) ky nang x hoi. hieu va ((cac cuoc) OR (chat xuc)) van han tai cua te.
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (hoc sach)) ky nang x hoi. hieu va ((cac cuoc) or (chat xuc)) van han tai cua te*.