Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
ban thanh » ban hanh, ban hang
thai cua » than cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
coc ban » co ban, cac ban, hoc ban
ky tang » ky nang, kho tang, ky trong
ky dang » ky nang, ky danh
ve cham » va cham, ve chat, ve chim
vu cham » va cham, vu kham, tu cham
su sac » su sach, su cac, su xac

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 tang) OR (ky dang)) xa hoi. hieu ((ve cham) or (vu cham)) coc ban thanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky tang) OR (ky dang)) xa hoi. hieu ((ve cham) OR (vu cham)) coc ban thanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky tang) OR (ky dang)) xa hoi. hieu ((ve cham) or (vu cham)) coc ban thanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) OR (ky dang)) xa hoi. hieu ((ve cham) or (vu cham)) coc ban thanh thai cua tre*.