Perhaps you should try some spelling variations:
van thiet » va thiet, dan thiet, can thiet
sach moi » sach doi, sach hoi, bach mai
moi xang » moi dang, moi sang, hoi lang
hieu van » hieu va, thien van, lieu va
van giao » nang giao, toan giao, dan gian
ban hanh » ban hang
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
xang xa » lang xa, mang xa, ang xa
hai van » thai van, ha van, hai tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach moi xang xa hoi. hieu van giao duc ((ban hanh) or (va thanh)) hai van thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach moi xang xa hoi. hieu van giao duc ((ban hanh) OR (va thanh)) hai van thiet.
• Adding a wildcard symbol may retrieve word variants: su sach moi xang xa hoi. hieu van giao duc ((ban hanh) or (va thanh)) hai van thiet*.