Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
toc sach » hoc sach, doc sach, thuoc sach
hang luc » nang luc, hang luan, hang truc
hieu ban » hieu van, dieu ban, lieu ban
ban hang » ngan hang
vuc nang » cuc nang, chuc nang, van nang
va hanh » van hanh, va thanh, va danh
vu nang » va nang, vu dang, v nang
hai cua » thai cua, dai cua, hoi cua
cua te » cua tu

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 ((vu nang) OR (vuc nang)) xa hoi. hieu ban hang luc ((va hanh) or (van thanh)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((vu nang) OR (vuc nang)) xa hoi. hieu ban hang luc ((va hanh) OR (van thanh)) hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((vu nang) OR (vuc nang)) xa hoi. hieu ban hang luc ((va hanh) or (van thanh)) hai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ((vu nang) OR (vuc nang)) xa hoi. hieu ban hang luc ((va hanh) or (van thanh)) hai cua te*.