Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh dai » thanh hai, thanh tai, thanh dat
quoc ban » quoc bao, quoc lan, quoc quan
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cam » ve cham, va cam, ve cai
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: su sac ky lang xa hoi. hieu ((ve cam) OR (ve cac)) quoc ban thanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky lang xa hoi. hieu ((ve cam) OR (ve cac)) quoc ban thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky lang xa hoi. hieu ((ve cam) OR (ve cac)) quoc ban thanh dai cua tre*.