Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
nuoc ban » nuoc san, quoc ban, buoc ban
ban hang » ngan hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua
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: ((toc sach) or (vu bach)) ky nang xa hoi. hieu ve cac nuoc ban hang ((vai cua) or (hai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (vu bach)) ky nang xa hoi. hieu ve cac nuoc ban hang ((vai cua) OR (hai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (vu bach)) ky nang xa hoi. hieu ve cac nuoc ban hang ((vai cua) or (hai cua)) triet*.